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Latest 25 from a total of 9,719 transactions
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Withdraw | 5291767 | 301 days ago | IN | 0 ETH | 0.00000212 | ||||
Withdraw | 5290457 | 301 days ago | IN | 0 ETH | 0.00000184 | ||||
Withdraw | 5289829 | 301 days ago | IN | 0 ETH | 0.0000016 | ||||
Withdraw | 5289063 | 301 days ago | IN | 0 ETH | 0.0000027 | ||||
Create Account | 5288953 | 301 days ago | IN | 0 ETH | 0.00000542 | ||||
Deposit | 5288700 | 301 days ago | IN | 0 ETH | 0.00000171 | ||||
Withdraw | 5288694 | 301 days ago | IN | 0 ETH | 0.00000179 | ||||
Create Account | 5288685 | 301 days ago | IN | 0 ETH | 0.00000569 | ||||
Withdraw | 5288674 | 301 days ago | IN | 0 ETH | 0.00000196 | ||||
Withdraw | 5288668 | 301 days ago | IN | 0 ETH | 0.00000149 | ||||
Withdraw | 5288523 | 301 days ago | IN | 0 ETH | 0.00000208 | ||||
Withdraw | 5288435 | 301 days ago | IN | 0 ETH | 0.0000016 | ||||
Create Account | 5288268 | 301 days ago | IN | 0 ETH | 0.00000608 | ||||
Withdraw | 5287651 | 301 days ago | IN | 0 ETH | 0.00000166 | ||||
Withdraw | 5287501 | 301 days ago | IN | 0 ETH | 0.00000233 | ||||
Withdraw | 5287488 | 301 days ago | IN | 0 ETH | 0.00000273 | ||||
Create Account | 5285768 | 301 days ago | IN | 0 ETH | 0.00000607 | ||||
Withdraw | 5285297 | 301 days ago | IN | 0 ETH | 0.00000129 | ||||
Withdraw | 5285285 | 301 days ago | IN | 0 ETH | 0.00000215 | ||||
Withdraw | 5283459 | 301 days ago | IN | 0 ETH | 0.0000016 | ||||
Withdraw | 5283359 | 301 days ago | IN | 0 ETH | 0.00000287 | ||||
Create Account | 5283336 | 301 days ago | IN | 0 ETH | 0.00000604 | ||||
Withdraw | 5282996 | 301 days ago | IN | 0 ETH | 0.00000131 | ||||
Deposit | 5282969 | 301 days ago | IN | 0 ETH | 0.00000123 | ||||
Create Account | 5282925 | 301 days ago | IN | 0 ETH | 0.00000414 |
Latest 25 internal transactions (View All)
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Contract Source Code Verified (Exact Match)
Contract Name:
JuiceAccountManager
Compiler Version
v0.8.24+commit.e11b9ed9
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.24; import "../managers/StrategyAccountManager.sol"; import "../interfaces/IAssetPriceProvider.sol"; import "../libraries/accounts/AccountLib.sol"; import "../libraries/Errors.sol"; import "./JuiceAccount.sol"; import "../managers/CollateralAccountManager.sol"; import "./periphery/BlastGas.sol"; import "./periphery/BlastPoints.sol"; abstract contract JuiceAccountManagerEvents { /// @notice When yield is accrued event YieldAccrued(uint256 amount); event AutoCompoundingToggled(bool isAutoCompounding); } /// @title JuiceAccountManager supports one account implementation /// @dev Facilitates collateralization of WETH. /// @notice The AccountManager contract deploys Account contracts. contract JuiceAccountManager is CollateralAccountManager, JuiceAccountManagerEvents, BlastGas, BlastPoints { using EnumerableSet for EnumerableSet.AddressSet; using SafeERC20 for IERC20; using Address for address; uint256 public constant MINIMUM_COMPOUND_AMOUNT = 1e6; bool public isAutoCompounding; /// @notice Constructs the factory /// @param params The parameters for the JuiceAccountManager constructor( address protocolGovernor_, address pointsOperator_, bool isAutoCompounding_, InitParams memory params ) CollateralAccountManager(protocolGovernor_, params) { __BlastGas_init(protocolGovernor_); __BlastPoints_init(protocolGovernor_, pointsOperator_); IERC20Rebasing(address(params.collateral)).configure(YieldMode.CLAIMABLE); isAutoCompounding = isAutoCompounding_; } function setAutoCompounding(bool _isAutoCompounding) public onlyOwner { isAutoCompounding = _isAutoCompounding; } /// @dev Takes assets from `msg.sender`, deposits them into the contract, and mints shares to the receiver. /// The shares are nontransferrable and reside in the receiver's address, but are used to credit the receiver's /// account contract. function deposit( uint256 assets, address receiver ) public override nonReentrant returns (uint256 updatedAssets, uint256 shares) { if (isAutoCompounding) { compound(); } (updatedAssets, shares) = _deposit(assets, msg.sender, receiver); } /// @dev Burns shares from the account of `msg.sender` and sends them to the receiver. /// `msg.sender` must be owner of account that owns the shares. function withdraw( uint256 shares, address receiver ) public override nonReentrant returns (uint256 updatedAssets, uint256 updatedShares) { if (isAutoCompounding) { compound(); } (updatedAssets, updatedShares) = _withdraw(msg.sender, receiver, shares); } function compound() public returns (uint256 earned) { IERC20Rebasing collateral = IERC20Rebasing(address(_collateral)); earned = collateral.getClaimableAmount(address(this)); // Avoid compounding dust. // We assume the claim just works. if (earned >= MINIMUM_COMPOUND_AMOUNT) { _totalCollateralAssets += earned; earned = IERC20Rebasing(address(_collateral)).claim(address(this), earned); emit YieldAccrued(earned); } } function totalAssets() public view virtual override returns (uint256) { return _totalCollateralAssets + IERC20Rebasing(address(_collateral)).getClaimableAmount(address(this)); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol) pragma solidity ^0.8.20; import {Context} from "../utils/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * The initial owner is set to the address provided by the deployer. This can * later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; /** * @dev The caller account is not authorized to perform an operation. */ error OwnableUnauthorizedAccount(address account); /** * @dev The owner is not a valid owner account. (eg. `address(0)`) */ error OwnableInvalidOwner(address owner); event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the address provided by the deployer as the initial owner. */ constructor(address initialOwner) { if (initialOwner == address(0)) { revert OwnableInvalidOwner(address(0)); } _transferOwnership(initialOwner); } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { _checkOwner(); _; } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if the sender is not the owner. */ function _checkOwner() internal view virtual { if (owner() != _msgSender()) { revert OwnableUnauthorizedAccount(_msgSender()); } } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby disabling any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { if (newOwner == address(0)) { revert OwnableInvalidOwner(address(0)); } _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable2Step.sol) pragma solidity ^0.8.20; import {Ownable} from "./Ownable.sol"; /** * @dev Contract module which provides access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * The initial owner is specified at deployment time in the constructor for `Ownable`. This * can later be changed with {transferOwnership} and {acceptOwnership}. * * This module is used through inheritance. It will make available all functions * from parent (Ownable). */ abstract contract Ownable2Step is Ownable { address private _pendingOwner; event OwnershipTransferStarted(address indexed previousOwner, address indexed newOwner); /** * @dev Returns the address of the pending owner. */ function pendingOwner() public view virtual returns (address) { return _pendingOwner; } /** * @dev Starts the ownership transfer of the contract to a new account. Replaces the pending transfer if there is one. * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual override onlyOwner { _pendingOwner = newOwner; emit OwnershipTransferStarted(owner(), newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`) and deletes any pending owner. * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual override { delete _pendingOwner; super._transferOwnership(newOwner); } /** * @dev The new owner accepts the ownership transfer. */ function acceptOwnership() public virtual { address sender = _msgSender(); if (pendingOwner() != sender) { revert OwnableUnauthorizedAccount(sender); } _transferOwnership(sender); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (proxy/Clones.sol) pragma solidity ^0.8.20; /** * @dev https://eips.ethereum.org/EIPS/eip-1167[EIP 1167] is a standard for * deploying minimal proxy contracts, also known as "clones". * * > To simply and cheaply clone contract functionality in an immutable way, this standard specifies * > a minimal bytecode implementation that delegates all calls to a known, fixed address. * * The library includes functions to deploy a proxy using either `create` (traditional deployment) or `create2` * (salted deterministic deployment). It also includes functions to predict the addresses of clones deployed using the * deterministic method. */ library Clones { /** * @dev A clone instance deployment failed. */ error ERC1167FailedCreateClone(); /** * @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`. * * This function uses the create opcode, which should never revert. */ function clone(address implementation) internal returns (address instance) { /// @solidity memory-safe-assembly assembly { // Cleans the upper 96 bits of the `implementation` word, then packs the first 3 bytes // of the `implementation` address with the bytecode before the address. mstore(0x00, or(shr(0xe8, shl(0x60, implementation)), 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000)) // Packs the remaining 17 bytes of `implementation` with the bytecode after the address. mstore(0x20, or(shl(0x78, implementation), 0x5af43d82803e903d91602b57fd5bf3)) instance := create(0, 0x09, 0x37) } if (instance == address(0)) { revert ERC1167FailedCreateClone(); } } /** * @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`. * * This function uses the create2 opcode and a `salt` to deterministically deploy * the clone. Using the same `implementation` and `salt` multiple time will revert, since * the clones cannot be deployed twice at the same address. */ function cloneDeterministic(address implementation, bytes32 salt) internal returns (address instance) { /// @solidity memory-safe-assembly assembly { // Cleans the upper 96 bits of the `implementation` word, then packs the first 3 bytes // of the `implementation` address with the bytecode before the address. mstore(0x00, or(shr(0xe8, shl(0x60, implementation)), 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000)) // Packs the remaining 17 bytes of `implementation` with the bytecode after the address. mstore(0x20, or(shl(0x78, implementation), 0x5af43d82803e903d91602b57fd5bf3)) instance := create2(0, 0x09, 0x37, salt) } if (instance == address(0)) { revert ERC1167FailedCreateClone(); } } /** * @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}. */ function predictDeterministicAddress( address implementation, bytes32 salt, address deployer ) internal pure returns (address predicted) { /// @solidity memory-safe-assembly assembly { let ptr := mload(0x40) mstore(add(ptr, 0x38), deployer) mstore(add(ptr, 0x24), 0x5af43d82803e903d91602b57fd5bf3ff) mstore(add(ptr, 0x14), implementation) mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73) mstore(add(ptr, 0x58), salt) mstore(add(ptr, 0x78), keccak256(add(ptr, 0x0c), 0x37)) predicted := keccak256(add(ptr, 0x43), 0x55) } } /** * @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}. */ function predictDeterministicAddress( address implementation, bytes32 salt ) internal view returns (address predicted) { return predictDeterministicAddress(implementation, salt, address(this)); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (proxy/utils/Initializable.sol) pragma solidity ^0.8.20; /** * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect. * * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in * case an upgrade adds a module that needs to be initialized. * * For example: * * [.hljs-theme-light.nopadding] * ```solidity * contract MyToken is ERC20Upgradeable { * function initialize() initializer public { * __ERC20_init("MyToken", "MTK"); * } * } * * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable { * function initializeV2() reinitializer(2) public { * __ERC20Permit_init("MyToken"); * } * } * ``` * * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}. * * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity. * * [CAUTION] * ==== * Avoid leaving a contract uninitialized. * * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed: * * [.hljs-theme-light.nopadding] * ``` * /// @custom:oz-upgrades-unsafe-allow constructor * constructor() { * _disableInitializers(); * } * ``` * ==== */ abstract contract Initializable { /** * @dev Storage of the initializable contract. * * It's implemented on a custom ERC-7201 namespace to reduce the risk of storage collisions * when using with upgradeable contracts. * * @custom:storage-location erc7201:openzeppelin.storage.Initializable */ struct InitializableStorage { /** * @dev Indicates that the contract has been initialized. */ uint64 _initialized; /** * @dev Indicates that the contract is in the process of being initialized. */ bool _initializing; } // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Initializable")) - 1)) & ~bytes32(uint256(0xff)) bytes32 private constant INITIALIZABLE_STORAGE = 0xf0c57e16840df040f15088dc2f81fe391c3923bec73e23a9662efc9c229c6a00; /** * @dev The contract is already initialized. */ error InvalidInitialization(); /** * @dev The contract is not initializing. */ error NotInitializing(); /** * @dev Triggered when the contract has been initialized or reinitialized. */ event Initialized(uint64 version); /** * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope, * `onlyInitializing` functions can be used to initialize parent contracts. * * Similar to `reinitializer(1)`, except that in the context of a constructor an `initializer` may be invoked any * number of times. This behavior in the constructor can be useful during testing and is not expected to be used in * production. * * Emits an {Initialized} event. */ modifier initializer() { // solhint-disable-next-line var-name-mixedcase InitializableStorage storage $ = _getInitializableStorage(); // Cache values to avoid duplicated sloads bool isTopLevelCall = !$._initializing; uint64 initialized = $._initialized; // Allowed calls: // - initialSetup: the contract is not in the initializing state and no previous version was // initialized // - construction: the contract is initialized at version 1 (no reininitialization) and the // current contract is just being deployed bool initialSetup = initialized == 0 && isTopLevelCall; bool construction = initialized == 1 && address(this).code.length == 0; if (!initialSetup && !construction) { revert InvalidInitialization(); } $._initialized = 1; if (isTopLevelCall) { $._initializing = true; } _; if (isTopLevelCall) { $._initializing = false; emit Initialized(1); } } /** * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be * used to initialize parent contracts. * * A reinitializer may be used after the original initialization step. This is essential to configure modules that * are added through upgrades and that require initialization. * * When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer` * cannot be nested. If one is invoked in the context of another, execution will revert. * * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in * a contract, executing them in the right order is up to the developer or operator. * * WARNING: Setting the version to 2**64 - 1 will prevent any future reinitialization. * * Emits an {Initialized} event. */ modifier reinitializer(uint64 version) { // solhint-disable-next-line var-name-mixedcase InitializableStorage storage $ = _getInitializableStorage(); if ($._initializing || $._initialized >= version) { revert InvalidInitialization(); } $._initialized = version; $._initializing = true; _; $._initializing = false; emit Initialized(version); } /** * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the * {initializer} and {reinitializer} modifiers, directly or indirectly. */ modifier onlyInitializing() { _checkInitializing(); _; } /** * @dev Reverts if the contract is not in an initializing state. See {onlyInitializing}. */ function _checkInitializing() internal view virtual { if (!_isInitializing()) { revert NotInitializing(); } } /** * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call. * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized * to any version. It is recommended to use this to lock implementation contracts that are designed to be called * through proxies. * * Emits an {Initialized} event the first time it is successfully executed. */ function _disableInitializers() internal virtual { // solhint-disable-next-line var-name-mixedcase InitializableStorage storage $ = _getInitializableStorage(); if ($._initializing) { revert InvalidInitialization(); } if ($._initialized != type(uint64).max) { $._initialized = type(uint64).max; emit Initialized(type(uint64).max); } } /** * @dev Returns the highest version that has been initialized. See {reinitializer}. */ function _getInitializedVersion() internal view returns (uint64) { return _getInitializableStorage()._initialized; } /** * @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}. */ function _isInitializing() internal view returns (bool) { return _getInitializableStorage()._initializing; } /** * @dev Returns a pointer to the storage namespace. */ // solhint-disable-next-line var-name-mixedcase function _getInitializableStorage() private pure returns (InitializableStorage storage $) { assembly { $.slot := INITIALIZABLE_STORAGE } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.20; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); /** * @dev Returns the value of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the value of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves a `value` amount of tokens from the caller's account to `to`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address to, uint256 value) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets a `value` amount of tokens as the allowance of `spender` over the * caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 value) external returns (bool); /** * @dev Moves a `value` amount of tokens from `from` to `to` using the * allowance mechanism. `value` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address from, address to, uint256 value) external returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Metadata.sol) pragma solidity ^0.8.20; import {IERC20} from "../IERC20.sol"; /** * @dev Interface for the optional metadata functions from the ERC20 standard. */ interface IERC20Metadata is IERC20 { /** * @dev Returns the name of the token. */ function name() external view returns (string memory); /** * @dev Returns the symbol of the token. */ function symbol() external view returns (string memory); /** * @dev Returns the decimals places of the token. */ function decimals() external view returns (uint8); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Permit.sol) pragma solidity ^0.8.20; /** * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612]. * * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't * need to send a transaction, and thus is not required to hold Ether at all. * * ==== Security Considerations * * There are two important considerations concerning the use of `permit`. The first is that a valid permit signature * expresses an allowance, and it should not be assumed to convey additional meaning. In particular, it should not be * considered as an intention to spend the allowance in any specific way. The second is that because permits have * built-in replay protection and can be submitted by anyone, they can be frontrun. A protocol that uses permits should * take this into consideration and allow a `permit` call to fail. Combining these two aspects, a pattern that may be * generally recommended is: * * ```solidity * function doThingWithPermit(..., uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public { * try token.permit(msg.sender, address(this), value, deadline, v, r, s) {} catch {} * doThing(..., value); * } * * function doThing(..., uint256 value) public { * token.safeTransferFrom(msg.sender, address(this), value); * ... * } * ``` * * Observe that: 1) `msg.sender` is used as the owner, leaving no ambiguity as to the signer intent, and 2) the use of * `try/catch` allows the permit to fail and makes the code tolerant to frontrunning. (See also * {SafeERC20-safeTransferFrom}). * * Additionally, note that smart contract wallets (such as Argent or Safe) are not able to produce permit signatures, so * contracts should have entry points that don't rely on permit. */ interface IERC20Permit { /** * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens, * given ``owner``'s signed approval. * * IMPORTANT: The same issues {IERC20-approve} has related to transaction * ordering also apply here. * * Emits an {Approval} event. * * Requirements: * * - `spender` cannot be the zero address. * - `deadline` must be a timestamp in the future. * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner` * over the EIP712-formatted function arguments. * - the signature must use ``owner``'s current nonce (see {nonces}). * * For more information on the signature format, see the * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP * section]. * * CAUTION: See Security Considerations above. */ function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; /** * @dev Returns the current nonce for `owner`. This value must be * included whenever a signature is generated for {permit}. * * Every successful call to {permit} increases ``owner``'s nonce by one. This * prevents a signature from being used multiple times. */ function nonces(address owner) external view returns (uint256); /** * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}. */ // solhint-disable-next-line func-name-mixedcase function DOMAIN_SEPARATOR() external view returns (bytes32); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/utils/SafeERC20.sol) pragma solidity ^0.8.20; import {IERC20} from "../IERC20.sol"; import {IERC20Permit} from "../extensions/IERC20Permit.sol"; import {Address} from "../../../utils/Address.sol"; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using Address for address; /** * @dev An operation with an ERC20 token failed. */ error SafeERC20FailedOperation(address token); /** * @dev Indicates a failed `decreaseAllowance` request. */ error SafeERC20FailedDecreaseAllowance(address spender, uint256 currentAllowance, uint256 requestedDecrease); /** * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value, * non-reverting calls are assumed to be successful. */ function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeCall(token.transfer, (to, value))); } /** * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful. */ function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeCall(token.transferFrom, (from, to, value))); } /** * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value, * non-reverting calls are assumed to be successful. */ function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 oldAllowance = token.allowance(address(this), spender); forceApprove(token, spender, oldAllowance + value); } /** * @dev Decrease the calling contract's allowance toward `spender` by `requestedDecrease`. If `token` returns no * value, non-reverting calls are assumed to be successful. */ function safeDecreaseAllowance(IERC20 token, address spender, uint256 requestedDecrease) internal { unchecked { uint256 currentAllowance = token.allowance(address(this), spender); if (currentAllowance < requestedDecrease) { revert SafeERC20FailedDecreaseAllowance(spender, currentAllowance, requestedDecrease); } forceApprove(token, spender, currentAllowance - requestedDecrease); } } /** * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value, * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval * to be set to zero before setting it to a non-zero value, such as USDT. */ function forceApprove(IERC20 token, address spender, uint256 value) internal { bytes memory approvalCall = abi.encodeCall(token.approve, (spender, value)); if (!_callOptionalReturnBool(token, approvalCall)) { _callOptionalReturn(token, abi.encodeCall(token.approve, (spender, 0))); _callOptionalReturn(token, approvalCall); } } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data); if (returndata.length != 0 && !abi.decode(returndata, (bool))) { revert SafeERC20FailedOperation(address(token)); } } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). * * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead. */ function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We cannot use {Address-functionCall} here since this should return false // and not revert is the subcall reverts. (bool success, bytes memory returndata) = address(token).call(data); return success && (returndata.length == 0 || abi.decode(returndata, (bool))) && address(token).code.length > 0; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/Address.sol) pragma solidity ^0.8.20; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev The ETH balance of the account is not enough to perform the operation. */ error AddressInsufficientBalance(address account); /** * @dev There's no code at `target` (it is not a contract). */ error AddressEmptyCode(address target); /** * @dev A call to an address target failed. The target may have reverted. */ error FailedInnerCall(); /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.8.20/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { if (address(this).balance < amount) { revert AddressInsufficientBalance(address(this)); } (bool success, ) = recipient.call{value: amount}(""); if (!success) { revert FailedInnerCall(); } } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason or custom error, it is bubbled * up by this function (like regular Solidity function calls). However, if * the call reverted with no returned reason, this function reverts with a * {FailedInnerCall} error. * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCallWithValue(target, data, 0); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { if (address(this).balance < value) { revert AddressInsufficientBalance(address(this)); } (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResultFromTarget(target, success, returndata); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResultFromTarget(target, success, returndata); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResultFromTarget(target, success, returndata); } /** * @dev Tool to verify that a low level call to smart-contract was successful, and reverts if the target * was not a contract or bubbling up the revert reason (falling back to {FailedInnerCall}) in case of an * unsuccessful call. */ function verifyCallResultFromTarget( address target, bool success, bytes memory returndata ) internal view returns (bytes memory) { if (!success) { _revert(returndata); } else { // only check if target is a contract if the call was successful and the return data is empty // otherwise we already know that it was a contract if (returndata.length == 0 && target.code.length == 0) { revert AddressEmptyCode(target); } return returndata; } } /** * @dev Tool to verify that a low level call was successful, and reverts if it wasn't, either by bubbling the * revert reason or with a default {FailedInnerCall} error. */ function verifyCallResult(bool success, bytes memory returndata) internal pure returns (bytes memory) { if (!success) { _revert(returndata); } else { return returndata; } } /** * @dev Reverts with returndata if present. Otherwise reverts with {FailedInnerCall}. */ function _revert(bytes memory returndata) private pure { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert FailedInnerCall(); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol) pragma solidity ^0.8.20; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } function _contextSuffixLength() internal view virtual returns (uint256) { return 0; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/Pausable.sol) pragma solidity ^0.8.20; import {Context} from "../utils/Context.sol"; /** * @dev Contract module which allows children to implement an emergency stop * mechanism that can be triggered by an authorized account. * * This module is used through inheritance. It will make available the * modifiers `whenNotPaused` and `whenPaused`, which can be applied to * the functions of your contract. Note that they will not be pausable by * simply including this module, only once the modifiers are put in place. */ abstract contract Pausable is Context { bool private _paused; /** * @dev Emitted when the pause is triggered by `account`. */ event Paused(address account); /** * @dev Emitted when the pause is lifted by `account`. */ event Unpaused(address account); /** * @dev The operation failed because the contract is paused. */ error EnforcedPause(); /** * @dev The operation failed because the contract is not paused. */ error ExpectedPause(); /** * @dev Initializes the contract in unpaused state. */ constructor() { _paused = false; } /** * @dev Modifier to make a function callable only when the contract is not paused. * * Requirements: * * - The contract must not be paused. */ modifier whenNotPaused() { _requireNotPaused(); _; } /** * @dev Modifier to make a function callable only when the contract is paused. * * Requirements: * * - The contract must be paused. */ modifier whenPaused() { _requirePaused(); _; } /** * @dev Returns true if the contract is paused, and false otherwise. */ function paused() public view virtual returns (bool) { return _paused; } /** * @dev Throws if the contract is paused. */ function _requireNotPaused() internal view virtual { if (paused()) { revert EnforcedPause(); } } /** * @dev Throws if the contract is not paused. */ function _requirePaused() internal view virtual { if (!paused()) { revert ExpectedPause(); } } /** * @dev Triggers stopped state. * * Requirements: * * - The contract must not be paused. */ function _pause() internal virtual whenNotPaused { _paused = true; emit Paused(_msgSender()); } /** * @dev Returns to normal state. * * Requirements: * * - The contract must be paused. */ function _unpause() internal virtual whenPaused { _paused = false; emit Unpaused(_msgSender()); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/ReentrancyGuard.sol) pragma solidity ^0.8.20; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ abstract contract ReentrancyGuard { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant NOT_ENTERED = 1; uint256 private constant ENTERED = 2; uint256 private _status; /** * @dev Unauthorized reentrant call. */ error ReentrancyGuardReentrantCall(); constructor() { _status = NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and making it call a * `private` function that does the actual work. */ modifier nonReentrant() { _nonReentrantBefore(); _; _nonReentrantAfter(); } function _nonReentrantBefore() private { // On the first call to nonReentrant, _status will be NOT_ENTERED if (_status == ENTERED) { revert ReentrancyGuardReentrantCall(); } // Any calls to nonReentrant after this point will fail _status = ENTERED; } function _nonReentrantAfter() private { // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = NOT_ENTERED; } /** * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a * `nonReentrant` function in the call stack. */ function _reentrancyGuardEntered() internal view returns (bool) { return _status == ENTERED; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/structs/EnumerableSet.sol) // This file was procedurally generated from scripts/generate/templates/EnumerableSet.js. pragma solidity ^0.8.20; /** * @dev Library for managing * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive * types. * * Sets have the following properties: * * - Elements are added, removed, and checked for existence in constant time * (O(1)). * - Elements are enumerated in O(n). No guarantees are made on the ordering. * * ```solidity * contract Example { * // Add the library methods * using EnumerableSet for EnumerableSet.AddressSet; * * // Declare a set state variable * EnumerableSet.AddressSet private mySet; * } * ``` * * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`) * and `uint256` (`UintSet`) are supported. * * [WARNING] * ==== * Trying to delete such a structure from storage will likely result in data corruption, rendering the structure * unusable. * See https://github.com/ethereum/solidity/pull/11843[ethereum/solidity#11843] for more info. * * In order to clean an EnumerableSet, you can either remove all elements one by one or create a fresh instance using an * array of EnumerableSet. * ==== */ library EnumerableSet { // To implement this library for multiple types with as little code // repetition as possible, we write it in terms of a generic Set type with // bytes32 values. // The Set implementation uses private functions, and user-facing // implementations (such as AddressSet) are just wrappers around the // underlying Set. // This means that we can only create new EnumerableSets for types that fit // in bytes32. struct Set { // Storage of set values bytes32[] _values; // Position is the index of the value in the `values` array plus 1. // Position 0 is used to mean a value is not in the set. mapping(bytes32 value => uint256) _positions; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function _add(Set storage set, bytes32 value) private returns (bool) { if (!_contains(set, value)) { set._values.push(value); // The value is stored at length-1, but we add 1 to all indexes // and use 0 as a sentinel value set._positions[value] = set._values.length; return true; } else { return false; } } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function _remove(Set storage set, bytes32 value) private returns (bool) { // We cache the value's position to prevent multiple reads from the same storage slot uint256 position = set._positions[value]; if (position != 0) { // Equivalent to contains(set, value) // To delete an element from the _values array in O(1), we swap the element to delete with the last one in // the array, and then remove the last element (sometimes called as 'swap and pop'). // This modifies the order of the array, as noted in {at}. uint256 valueIndex = position - 1; uint256 lastIndex = set._values.length - 1; if (valueIndex != lastIndex) { bytes32 lastValue = set._values[lastIndex]; // Move the lastValue to the index where the value to delete is set._values[valueIndex] = lastValue; // Update the tracked position of the lastValue (that was just moved) set._positions[lastValue] = position; } // Delete the slot where the moved value was stored set._values.pop(); // Delete the tracked position for the deleted slot delete set._positions[value]; return true; } else { return false; } } /** * @dev Returns true if the value is in the set. O(1). */ function _contains(Set storage set, bytes32 value) private view returns (bool) { return set._positions[value] != 0; } /** * @dev Returns the number of values on the set. O(1). */ function _length(Set storage set) private view returns (uint256) { return set._values.length; } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function _at(Set storage set, uint256 index) private view returns (bytes32) { return set._values[index]; } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function _values(Set storage set) private view returns (bytes32[] memory) { return set._values; } // Bytes32Set struct Bytes32Set { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _add(set._inner, value); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _remove(set._inner, value); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) { return _contains(set._inner, value); } /** * @dev Returns the number of values in the set. O(1). */ function length(Bytes32Set storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) { return _at(set._inner, index); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(Bytes32Set storage set) internal view returns (bytes32[] memory) { bytes32[] memory store = _values(set._inner); bytes32[] memory result; /// @solidity memory-safe-assembly assembly { result := store } return result; } // AddressSet struct AddressSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(AddressSet storage set, address value) internal returns (bool) { return _add(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(AddressSet storage set, address value) internal returns (bool) { return _remove(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(AddressSet storage set, address value) internal view returns (bool) { return _contains(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns the number of values in the set. O(1). */ function length(AddressSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(AddressSet storage set, uint256 index) internal view returns (address) { return address(uint160(uint256(_at(set._inner, index)))); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(AddressSet storage set) internal view returns (address[] memory) { bytes32[] memory store = _values(set._inner); address[] memory result; /// @solidity memory-safe-assembly assembly { result := store } return result; } // UintSet struct UintSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(UintSet storage set, uint256 value) internal returns (bool) { return _add(set._inner, bytes32(value)); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(UintSet storage set, uint256 value) internal returns (bool) { return _remove(set._inner, bytes32(value)); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(UintSet storage set, uint256 value) internal view returns (bool) { return _contains(set._inner, bytes32(value)); } /** * @dev Returns the number of values in the set. O(1). */ function length(UintSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(UintSet storage set, uint256 index) internal view returns (uint256) { return uint256(_at(set._inner, index)); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(UintSet storage set) internal view returns (uint256[] memory) { bytes32[] memory store = _values(set._inner); uint256[] memory result; /// @solidity memory-safe-assembly assembly { result := store } return result; } }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.19; // Common.sol // // Common mathematical functions used in both SD59x18 and UD60x18. Note that these global functions do not // always operate with SD59x18 and UD60x18 numbers. /*////////////////////////////////////////////////////////////////////////// CUSTOM ERRORS //////////////////////////////////////////////////////////////////////////*/ /// @notice Thrown when the resultant value in {mulDiv} overflows uint256. error PRBMath_MulDiv_Overflow(uint256 x, uint256 y, uint256 denominator); /// @notice Thrown when the resultant value in {mulDiv18} overflows uint256. error PRBMath_MulDiv18_Overflow(uint256 x, uint256 y); /// @notice Thrown when one of the inputs passed to {mulDivSigned} is `type(int256).min`. error PRBMath_MulDivSigned_InputTooSmall(); /// @notice Thrown when the resultant value in {mulDivSigned} overflows int256. error PRBMath_MulDivSigned_Overflow(int256 x, int256 y); /*////////////////////////////////////////////////////////////////////////// CONSTANTS //////////////////////////////////////////////////////////////////////////*/ /// @dev The maximum value a uint128 number can have. uint128 constant MAX_UINT128 = type(uint128).max; /// @dev The maximum value a uint40 number can have. uint40 constant MAX_UINT40 = type(uint40).max; /// @dev The unit number, which the decimal precision of the fixed-point types. uint256 constant UNIT = 1e18; /// @dev The unit number inverted mod 2^256. uint256 constant UNIT_INVERSE = 78156646155174841979727994598816262306175212592076161876661_508869554232690281; /// @dev The the largest power of two that divides the decimal value of `UNIT`. The logarithm of this value is the least significant /// bit in the binary representation of `UNIT`. uint256 constant UNIT_LPOTD = 262144; /*////////////////////////////////////////////////////////////////////////// FUNCTIONS //////////////////////////////////////////////////////////////////////////*/ /// @notice Calculates the binary exponent of x using the binary fraction method. /// @dev Has to use 192.64-bit fixed-point numbers. See https://ethereum.stackexchange.com/a/96594/24693. /// @param x The exponent as an unsigned 192.64-bit fixed-point number. /// @return result The result as an unsigned 60.18-decimal fixed-point number. /// @custom:smtchecker abstract-function-nondet function exp2(uint256 x) pure returns (uint256 result) { unchecked { // Start from 0.5 in the 192.64-bit fixed-point format. result = 0x800000000000000000000000000000000000000000000000; // The following logic multiplies the result by $\sqrt{2^{-i}}$ when the bit at position i is 1. Key points: // // 1. Intermediate results will not overflow, as the starting point is 2^191 and all magic factors are under 2^65. // 2. The rationale for organizing the if statements into groups of 8 is gas savings. If the result of performing // a bitwise AND operation between x and any value in the array [0x80; 0x40; 0x20; 0x10; 0x08; 0x04; 0x02; 0x01] is 1, // we know that `x & 0xFF` is also 1. if (x & 0xFF00000000000000 > 0) { if (x & 0x8000000000000000 > 0) { result = (result * 0x16A09E667F3BCC909) >> 64; } if (x & 0x4000000000000000 > 0) { result = (result * 0x1306FE0A31B7152DF) >> 64; } if (x & 0x2000000000000000 > 0) { result = (result * 0x1172B83C7D517ADCE) >> 64; } if (x & 0x1000000000000000 > 0) { result = (result * 0x10B5586CF9890F62A) >> 64; } if (x & 0x800000000000000 > 0) { result = (result * 0x1059B0D31585743AE) >> 64; } if (x & 0x400000000000000 > 0) { result = (result * 0x102C9A3E778060EE7) >> 64; } if (x & 0x200000000000000 > 0) { result = (result * 0x10163DA9FB33356D8) >> 64; } if (x & 0x100000000000000 > 0) { result = (result * 0x100B1AFA5ABCBED61) >> 64; } } if (x & 0xFF000000000000 > 0) { if (x & 0x80000000000000 > 0) { result = (result * 0x10058C86DA1C09EA2) >> 64; } if (x & 0x40000000000000 > 0) { result = (result * 0x1002C605E2E8CEC50) >> 64; } if (x & 0x20000000000000 > 0) { result = (result * 0x100162F3904051FA1) >> 64; } if (x & 0x10000000000000 > 0) { result = (result * 0x1000B175EFFDC76BA) >> 64; } if (x & 0x8000000000000 > 0) { result = (result * 0x100058BA01FB9F96D) >> 64; } if (x & 0x4000000000000 > 0) { result = (result * 0x10002C5CC37DA9492) >> 64; } if (x & 0x2000000000000 > 0) { result = (result * 0x1000162E525EE0547) >> 64; } if (x & 0x1000000000000 > 0) { result = (result * 0x10000B17255775C04) >> 64; } } if (x & 0xFF0000000000 > 0) { if (x & 0x800000000000 > 0) { result = (result * 0x1000058B91B5BC9AE) >> 64; } if (x & 0x400000000000 > 0) { result = (result * 0x100002C5C89D5EC6D) >> 64; } if (x & 0x200000000000 > 0) { result = (result * 0x10000162E43F4F831) >> 64; } if (x & 0x100000000000 > 0) { result = (result * 0x100000B1721BCFC9A) >> 64; } if (x & 0x80000000000 > 0) { result = (result * 0x10000058B90CF1E6E) >> 64; } if (x & 0x40000000000 > 0) { result = (result * 0x1000002C5C863B73F) >> 64; } if (x & 0x20000000000 > 0) { result = (result * 0x100000162E430E5A2) >> 64; } if (x & 0x10000000000 > 0) { result = (result * 0x1000000B172183551) >> 64; } } if (x & 0xFF00000000 > 0) { if (x & 0x8000000000 > 0) { result = (result * 0x100000058B90C0B49) >> 64; } if (x & 0x4000000000 > 0) { result = (result * 0x10000002C5C8601CC) >> 64; } if (x & 0x2000000000 > 0) { result = (result * 0x1000000162E42FFF0) >> 64; } if (x & 0x1000000000 > 0) { result = (result * 0x10000000B17217FBB) >> 64; } if (x & 0x800000000 > 0) { result = (result * 0x1000000058B90BFCE) >> 64; } if (x & 0x400000000 > 0) { result = (result * 0x100000002C5C85FE3) >> 64; } if (x & 0x200000000 > 0) { result = (result * 0x10000000162E42FF1) >> 64; } if (x & 0x100000000 > 0) { result = (result * 0x100000000B17217F8) >> 64; } } if (x & 0xFF000000 > 0) { if (x & 0x80000000 > 0) { result = (result * 0x10000000058B90BFC) >> 64; } if (x & 0x40000000 > 0) { result = (result * 0x1000000002C5C85FE) >> 64; } if (x & 0x20000000 > 0) { result = (result * 0x100000000162E42FF) >> 64; } if (x & 0x10000000 > 0) { result = (result * 0x1000000000B17217F) >> 64; } if (x & 0x8000000 > 0) { result = (result * 0x100000000058B90C0) >> 64; } if (x & 0x4000000 > 0) { result = (result * 0x10000000002C5C860) >> 64; } if (x & 0x2000000 > 0) { result = (result * 0x1000000000162E430) >> 64; } if (x & 0x1000000 > 0) { result = (result * 0x10000000000B17218) >> 64; } } if (x & 0xFF0000 > 0) { if (x & 0x800000 > 0) { result = (result * 0x1000000000058B90C) >> 64; } if (x & 0x400000 > 0) { result = (result * 0x100000000002C5C86) >> 64; } if (x & 0x200000 > 0) { result = (result * 0x10000000000162E43) >> 64; } if (x & 0x100000 > 0) { result = (result * 0x100000000000B1721) >> 64; } if (x & 0x80000 > 0) { result = (result * 0x10000000000058B91) >> 64; } if (x & 0x40000 > 0) { result = (result * 0x1000000000002C5C8) >> 64; } if (x & 0x20000 > 0) { result = (result * 0x100000000000162E4) >> 64; } if (x & 0x10000 > 0) { result = (result * 0x1000000000000B172) >> 64; } } if (x & 0xFF00 > 0) { if (x & 0x8000 > 0) { result = (result * 0x100000000000058B9) >> 64; } if (x & 0x4000 > 0) { result = (result * 0x10000000000002C5D) >> 64; } if (x & 0x2000 > 0) { result = (result * 0x1000000000000162E) >> 64; } if (x & 0x1000 > 0) { result = (result * 0x10000000000000B17) >> 64; } if (x & 0x800 > 0) { result = (result * 0x1000000000000058C) >> 64; } if (x & 0x400 > 0) { result = (result * 0x100000000000002C6) >> 64; } if (x & 0x200 > 0) { result = (result * 0x10000000000000163) >> 64; } if (x & 0x100 > 0) { result = (result * 0x100000000000000B1) >> 64; } } if (x & 0xFF > 0) { if (x & 0x80 > 0) { result = (result * 0x10000000000000059) >> 64; } if (x & 0x40 > 0) { result = (result * 0x1000000000000002C) >> 64; } if (x & 0x20 > 0) { result = (result * 0x10000000000000016) >> 64; } if (x & 0x10 > 0) { result = (result * 0x1000000000000000B) >> 64; } if (x & 0x8 > 0) { result = (result * 0x10000000000000006) >> 64; } if (x & 0x4 > 0) { result = (result * 0x10000000000000003) >> 64; } if (x & 0x2 > 0) { result = (result * 0x10000000000000001) >> 64; } if (x & 0x1 > 0) { result = (result * 0x10000000000000001) >> 64; } } // In the code snippet below, two operations are executed simultaneously: // // 1. The result is multiplied by $(2^n + 1)$, where $2^n$ represents the integer part, and the additional 1 // accounts for the initial guess of 0.5. This is achieved by subtracting from 191 instead of 192. // 2. The result is then converted to an unsigned 60.18-decimal fixed-point format. // // The underlying logic is based on the relationship $2^{191-ip} = 2^{ip} / 2^{191}$, where $ip$ denotes the, // integer part, $2^n$. result *= UNIT; result >>= (191 - (x >> 64)); } } /// @notice Finds the zero-based index of the first 1 in the binary representation of x. /// /// @dev See the note on "msb" in this Wikipedia article: https://en.wikipedia.org/wiki/Find_first_set /// /// Each step in this implementation is equivalent to this high-level code: /// /// ```solidity /// if (x >= 2 ** 128) { /// x >>= 128; /// result += 128; /// } /// ``` /// /// Where 128 is replaced with each respective power of two factor. See the full high-level implementation here: /// https://gist.github.com/PaulRBerg/f932f8693f2733e30c4d479e8e980948 /// /// The Yul instructions used below are: /// /// - "gt" is "greater than" /// - "or" is the OR bitwise operator /// - "shl" is "shift left" /// - "shr" is "shift right" /// /// @param x The uint256 number for which to find the index of the most significant bit. /// @return result The index of the most significant bit as a uint256. /// @custom:smtchecker abstract-function-nondet function msb(uint256 x) pure returns (uint256 result) { // 2^128 assembly ("memory-safe") { let factor := shl(7, gt(x, 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)) x := shr(factor, x) result := or(result, factor) } // 2^64 assembly ("memory-safe") { let factor := shl(6, gt(x, 0xFFFFFFFFFFFFFFFF)) x := shr(factor, x) result := or(result, factor) } // 2^32 assembly ("memory-safe") { let factor := shl(5, gt(x, 0xFFFFFFFF)) x := shr(factor, x) result := or(result, factor) } // 2^16 assembly ("memory-safe") { let factor := shl(4, gt(x, 0xFFFF)) x := shr(factor, x) result := or(result, factor) } // 2^8 assembly ("memory-safe") { let factor := shl(3, gt(x, 0xFF)) x := shr(factor, x) result := or(result, factor) } // 2^4 assembly ("memory-safe") { let factor := shl(2, gt(x, 0xF)) x := shr(factor, x) result := or(result, factor) } // 2^2 assembly ("memory-safe") { let factor := shl(1, gt(x, 0x3)) x := shr(factor, x) result := or(result, factor) } // 2^1 // No need to shift x any more. assembly ("memory-safe") { let factor := gt(x, 0x1) result := or(result, factor) } } /// @notice Calculates x*y÷denominator with 512-bit precision. /// /// @dev Credits to Remco Bloemen under MIT license https://xn--2-umb.com/21/muldiv. /// /// Notes: /// - The result is rounded toward zero. /// /// Requirements: /// - The denominator must not be zero. /// - The result must fit in uint256. /// /// @param x The multiplicand as a uint256. /// @param y The multiplier as a uint256. /// @param denominator The divisor as a uint256. /// @return result The result as a uint256. /// @custom:smtchecker abstract-function-nondet function mulDiv(uint256 x, uint256 y, uint256 denominator) pure returns (uint256 result) { // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use // use the Chinese Remainder Theorem to reconstruct the 512-bit result. The result is stored in two 256 // variables such that product = prod1 * 2^256 + prod0. uint256 prod0; // Least significant 256 bits of the product uint256 prod1; // Most significant 256 bits of the product assembly ("memory-safe") { let mm := mulmod(x, y, not(0)) prod0 := mul(x, y) prod1 := sub(sub(mm, prod0), lt(mm, prod0)) } // Handle non-overflow cases, 256 by 256 division. if (prod1 == 0) { unchecked { return prod0 / denominator; } } // Make sure the result is less than 2^256. Also prevents denominator == 0. if (prod1 >= denominator) { revert PRBMath_MulDiv_Overflow(x, y, denominator); } //////////////////////////////////////////////////////////////////////////// // 512 by 256 division //////////////////////////////////////////////////////////////////////////// // Make division exact by subtracting the remainder from [prod1 prod0]. uint256 remainder; assembly ("memory-safe") { // Compute remainder using the mulmod Yul instruction. remainder := mulmod(x, y, denominator) // Subtract 256 bit number from 512-bit number. prod1 := sub(prod1, gt(remainder, prod0)) prod0 := sub(prod0, remainder) } unchecked { // Calculate the largest power of two divisor of the denominator using the unary operator ~. This operation cannot overflow // because the denominator cannot be zero at this point in the function execution. The result is always >= 1. // For more detail, see https://cs.stackexchange.com/q/138556/92363. uint256 lpotdod = denominator & (~denominator + 1); uint256 flippedLpotdod; assembly ("memory-safe") { // Factor powers of two out of denominator. denominator := div(denominator, lpotdod) // Divide [prod1 prod0] by lpotdod. prod0 := div(prod0, lpotdod) // Get the flipped value `2^256 / lpotdod`. If the `lpotdod` is zero, the flipped value is one. // `sub(0, lpotdod)` produces the two's complement version of `lpotdod`, which is equivalent to flipping all the bits. // However, `div` interprets this value as an unsigned value: https://ethereum.stackexchange.com/q/147168/24693 flippedLpotdod := add(div(sub(0, lpotdod), lpotdod), 1) } // Shift in bits from prod1 into prod0. prod0 |= prod1 * flippedLpotdod; // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for // four bits. That is, denominator * inv = 1 mod 2^4. uint256 inverse = (3 * denominator) ^ 2; // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works // in modular arithmetic, doubling the correct bits in each step. inverse *= 2 - denominator * inverse; // inverse mod 2^8 inverse *= 2 - denominator * inverse; // inverse mod 2^16 inverse *= 2 - denominator * inverse; // inverse mod 2^32 inverse *= 2 - denominator * inverse; // inverse mod 2^64 inverse *= 2 - denominator * inverse; // inverse mod 2^128 inverse *= 2 - denominator * inverse; // inverse mod 2^256 // Because the division is now exact we can divide by multiplying with the modular inverse of denominator. // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1 // is no longer required. result = prod0 * inverse; } } /// @notice Calculates x*y÷1e18 with 512-bit precision. /// /// @dev A variant of {mulDiv} with constant folding, i.e. in which the denominator is hard coded to 1e18. /// /// Notes: /// - The body is purposely left uncommented; to understand how this works, see the documentation in {mulDiv}. /// - The result is rounded toward zero. /// - We take as an axiom that the result cannot be `MAX_UINT256` when x and y solve the following system of equations: /// /// $$ /// \begin{cases} /// x * y = MAX\_UINT256 * UNIT \\ /// (x * y) \% UNIT \geq \frac{UNIT}{2} /// \end{cases} /// $$ /// /// Requirements: /// - Refer to the requirements in {mulDiv}. /// - The result must fit in uint256. /// /// @param x The multiplicand as an unsigned 60.18-decimal fixed-point number. /// @param y The multiplier as an unsigned 60.18-decimal fixed-point number. /// @return result The result as an unsigned 60.18-decimal fixed-point number. /// @custom:smtchecker abstract-function-nondet function mulDiv18(uint256 x, uint256 y) pure returns (uint256 result) { uint256 prod0; uint256 prod1; assembly ("memory-safe") { let mm := mulmod(x, y, not(0)) prod0 := mul(x, y) prod1 := sub(sub(mm, prod0), lt(mm, prod0)) } if (prod1 == 0) { unchecked { return prod0 / UNIT; } } if (prod1 >= UNIT) { revert PRBMath_MulDiv18_Overflow(x, y); } uint256 remainder; assembly ("memory-safe") { remainder := mulmod(x, y, UNIT) result := mul( or( div(sub(prod0, remainder), UNIT_LPOTD), mul(sub(prod1, gt(remainder, prod0)), add(div(sub(0, UNIT_LPOTD), UNIT_LPOTD), 1)) ), UNIT_INVERSE ) } } /// @notice Calculates x*y÷denominator with 512-bit precision. /// /// @dev This is an extension of {mulDiv} for signed numbers, which works by computing the signs and the absolute values separately. /// /// Notes: /// - The result is rounded toward zero. /// /// Requirements: /// - Refer to the requirements in {mulDiv}. /// - None of the inputs can be `type(int256).min`. /// - The result must fit in int256. /// /// @param x The multiplicand as an int256. /// @param y The multiplier as an int256. /// @param denominator The divisor as an int256. /// @return result The result as an int256. /// @custom:smtchecker abstract-function-nondet function mulDivSigned(int256 x, int256 y, int256 denominator) pure returns (int256 result) { if (x == type(int256).min || y == type(int256).min || denominator == type(int256).min) { revert PRBMath_MulDivSigned_InputTooSmall(); } // Get hold of the absolute values of x, y and the denominator. uint256 xAbs; uint256 yAbs; uint256 dAbs; unchecked { xAbs = x < 0 ? uint256(-x) : uint256(x); yAbs = y < 0 ? uint256(-y) : uint256(y); dAbs = denominator < 0 ? uint256(-denominator) : uint256(denominator); } // Compute the absolute value of x*y÷denominator. The result must fit in int256. uint256 resultAbs = mulDiv(xAbs, yAbs, dAbs); if (resultAbs > uint256(type(int256).max)) { revert PRBMath_MulDivSigned_Overflow(x, y); } // Get the signs of x, y and the denominator. uint256 sx; uint256 sy; uint256 sd; assembly ("memory-safe") { // "sgt" is the "signed greater than" assembly instruction and "sub(0,1)" is -1 in two's complement. sx := sgt(x, sub(0, 1)) sy := sgt(y, sub(0, 1)) sd := sgt(denominator, sub(0, 1)) } // XOR over sx, sy and sd. What this does is to check whether there are 1 or 3 negative signs in the inputs. // If there are, the result should be negative. Otherwise, it should be positive. unchecked { result = sx ^ sy ^ sd == 0 ? -int256(resultAbs) : int256(resultAbs); } } /// @notice Calculates the square root of x using the Babylonian method. /// /// @dev See https://en.wikipedia.org/wiki/Methods_of_computing_square_roots#Babylonian_method. /// /// Notes: /// - If x is not a perfect square, the result is rounded down. /// - Credits to OpenZeppelin for the explanations in comments below. /// /// @param x The uint256 number for which to calculate the square root. /// @return result The result as a uint256. /// @custom:smtchecker abstract-function-nondet function sqrt(uint256 x) pure returns (uint256 result) { if (x == 0) { return 0; } // For our first guess, we calculate the biggest power of 2 which is smaller than the square root of x. // // We know that the "msb" (most significant bit) of x is a power of 2 such that we have: // // $$ // msb(x) <= x <= 2*msb(x)$ // $$ // // We write $msb(x)$ as $2^k$, and we get: // // $$ // k = log_2(x) // $$ // // Thus, we can write the initial inequality as: // // $$ // 2^{log_2(x)} <= x <= 2*2^{log_2(x)+1} \\ // sqrt(2^k) <= sqrt(x) < sqrt(2^{k+1}) \\ // 2^{k/2} <= sqrt(x) < 2^{(k+1)/2} <= 2^{(k/2)+1} // $$ // // Consequently, $2^{log_2(x) /2} is a good first approximation of sqrt(x) with at least one correct bit. uint256 xAux = uint256(x); result = 1; if (xAux >= 2 ** 128) { xAux >>= 128; result <<= 64; } if (xAux >= 2 ** 64) { xAux >>= 64; result <<= 32; } if (xAux >= 2 ** 32) { xAux >>= 32; result <<= 16; } if (xAux >= 2 ** 16) { xAux >>= 16; result <<= 8; } if (xAux >= 2 ** 8) { xAux >>= 8; result <<= 4; } if (xAux >= 2 ** 4) { xAux >>= 4; result <<= 2; } if (xAux >= 2 ** 2) { result <<= 1; } // At this point, `result` is an estimation with at least one bit of precision. We know the true value has at // most 128 bits, since it is the square root of a uint256. Newton's method converges quadratically (precision // doubles at every iteration). We thus need at most 7 iteration to turn our partial result with one bit of // precision into the expected uint128 result. unchecked { result = (result + x / result) >> 1; result = (result + x / result) >> 1; result = (result + x / result) >> 1; result = (result + x / result) >> 1; result = (result + x / result) >> 1; result = (result + x / result) >> 1; result = (result + x / result) >> 1; // If x is not a perfect square, round the result toward zero. uint256 roundedResult = x / result; if (result >= roundedResult) { result = roundedResult; } } }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.19; /* ██████╗ ██████╗ ██████╗ ███╗ ███╗ █████╗ ████████╗██╗ ██╗ ██╔══██╗██╔══██╗██╔══██╗████╗ ████║██╔══██╗╚══██╔══╝██║ ██║ ██████╔╝██████╔╝██████╔╝██╔████╔██║███████║ ██║ ███████║ ██╔═══╝ ██╔══██╗██╔══██╗██║╚██╔╝██║██╔══██║ ██║ ██╔══██║ ██║ ██║ ██║██████╔╝██║ ╚═╝ ██║██║ ██║ ██║ ██║ ██║ ╚═╝ ╚═╝ ╚═╝╚═════╝ ╚═╝ ╚═╝╚═╝ ╚═╝ ╚═╝ ╚═╝ ╚═╝ ██╗ ██╗██████╗ ██████╗ ██████╗ ██╗ ██╗ ██╗ █████╗ ██║ ██║██╔══██╗██╔════╝ ██╔═████╗╚██╗██╔╝███║██╔══██╗ ██║ ██║██║ ██║███████╗ ██║██╔██║ ╚███╔╝ ╚██║╚█████╔╝ ██║ ██║██║ ██║██╔═══██╗████╔╝██║ ██╔██╗ ██║██╔══██╗ ╚██████╔╝██████╔╝╚██████╔╝╚██████╔╝██╔╝ ██╗ ██║╚█████╔╝ ╚═════╝ ╚═════╝ ╚═════╝ ╚═════╝ ╚═╝ ╚═╝ ╚═╝ ╚════╝ */ import "./ud60x18/Casting.sol"; import "./ud60x18/Constants.sol"; import "./ud60x18/Conversions.sol"; import "./ud60x18/Errors.sol"; import "./ud60x18/Helpers.sol"; import "./ud60x18/Math.sol"; import "./ud60x18/ValueType.sol";
// SPDX-License-Identifier: MIT pragma solidity >=0.8.19; import "../Common.sol" as Common; import "./Errors.sol" as CastingErrors; import { SD59x18 } from "../sd59x18/ValueType.sol"; import { UD2x18 } from "../ud2x18/ValueType.sol"; import { UD60x18 } from "../ud60x18/ValueType.sol"; import { SD1x18 } from "./ValueType.sol"; /// @notice Casts an SD1x18 number into SD59x18. /// @dev There is no overflow check because the domain of SD1x18 is a subset of SD59x18. function intoSD59x18(SD1x18 x) pure returns (SD59x18 result) { result = SD59x18.wrap(int256(SD1x18.unwrap(x))); } /// @notice Casts an SD1x18 number into UD2x18. /// - x must be positive. function intoUD2x18(SD1x18 x) pure returns (UD2x18 result) { int64 xInt = SD1x18.unwrap(x); if (xInt < 0) { revert CastingErrors.PRBMath_SD1x18_ToUD2x18_Underflow(x); } result = UD2x18.wrap(uint64(xInt)); } /// @notice Casts an SD1x18 number into UD60x18. /// @dev Requirements: /// - x must be positive. function intoUD60x18(SD1x18 x) pure returns (UD60x18 result) { int64 xInt = SD1x18.unwrap(x); if (xInt < 0) { revert CastingErrors.PRBMath_SD1x18_ToUD60x18_Underflow(x); } result = UD60x18.wrap(uint64(xInt)); } /// @notice Casts an SD1x18 number into uint256. /// @dev Requirements: /// - x must be positive. function intoUint256(SD1x18 x) pure returns (uint256 result) { int64 xInt = SD1x18.unwrap(x); if (xInt < 0) { revert CastingErrors.PRBMath_SD1x18_ToUint256_Underflow(x); } result = uint256(uint64(xInt)); } /// @notice Casts an SD1x18 number into uint128. /// @dev Requirements: /// - x must be positive. function intoUint128(SD1x18 x) pure returns (uint128 result) { int64 xInt = SD1x18.unwrap(x); if (xInt < 0) { revert CastingErrors.PRBMath_SD1x18_ToUint128_Underflow(x); } result = uint128(uint64(xInt)); } /// @notice Casts an SD1x18 number into uint40. /// @dev Requirements: /// - x must be positive. /// - x must be less than or equal to `MAX_UINT40`. function intoUint40(SD1x18 x) pure returns (uint40 result) { int64 xInt = SD1x18.unwrap(x); if (xInt < 0) { revert CastingErrors.PRBMath_SD1x18_ToUint40_Underflow(x); } if (xInt > int64(uint64(Common.MAX_UINT40))) { revert CastingErrors.PRBMath_SD1x18_ToUint40_Overflow(x); } result = uint40(uint64(xInt)); } /// @notice Alias for {wrap}. function sd1x18(int64 x) pure returns (SD1x18 result) { result = SD1x18.wrap(x); } /// @notice Unwraps an SD1x18 number into int64. function unwrap(SD1x18 x) pure returns (int64 result) { result = SD1x18.unwrap(x); } /// @notice Wraps an int64 number into SD1x18. function wrap(int64 x) pure returns (SD1x18 result) { result = SD1x18.wrap(x); }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.19; import { SD1x18 } from "./ValueType.sol"; /// @dev Euler's number as an SD1x18 number. SD1x18 constant E = SD1x18.wrap(2_718281828459045235); /// @dev The maximum value an SD1x18 number can have. int64 constant uMAX_SD1x18 = 9_223372036854775807; SD1x18 constant MAX_SD1x18 = SD1x18.wrap(uMAX_SD1x18); /// @dev The maximum value an SD1x18 number can have. int64 constant uMIN_SD1x18 = -9_223372036854775808; SD1x18 constant MIN_SD1x18 = SD1x18.wrap(uMIN_SD1x18); /// @dev PI as an SD1x18 number. SD1x18 constant PI = SD1x18.wrap(3_141592653589793238); /// @dev The unit number, which gives the decimal precision of SD1x18. SD1x18 constant UNIT = SD1x18.wrap(1e18); int256 constant uUNIT = 1e18;
// SPDX-License-Identifier: MIT pragma solidity >=0.8.19; import { SD1x18 } from "./ValueType.sol"; /// @notice Thrown when trying to cast a SD1x18 number that doesn't fit in UD2x18. error PRBMath_SD1x18_ToUD2x18_Underflow(SD1x18 x); /// @notice Thrown when trying to cast a SD1x18 number that doesn't fit in UD60x18. error PRBMath_SD1x18_ToUD60x18_Underflow(SD1x18 x); /// @notice Thrown when trying to cast a SD1x18 number that doesn't fit in uint128. error PRBMath_SD1x18_ToUint128_Underflow(SD1x18 x); /// @notice Thrown when trying to cast a SD1x18 number that doesn't fit in uint256. error PRBMath_SD1x18_ToUint256_Underflow(SD1x18 x); /// @notice Thrown when trying to cast a SD1x18 number that doesn't fit in uint40. error PRBMath_SD1x18_ToUint40_Overflow(SD1x18 x); /// @notice Thrown when trying to cast a SD1x18 number that doesn't fit in uint40. error PRBMath_SD1x18_ToUint40_Underflow(SD1x18 x);
// SPDX-License-Identifier: MIT pragma solidity >=0.8.19; import "./Casting.sol" as Casting; /// @notice The signed 1.18-decimal fixed-point number representation, which can have up to 1 digit and up to 18 /// decimals. The values of this are bound by the minimum and the maximum values permitted by the underlying Solidity /// type int64. This is useful when end users want to use int64 to save gas, e.g. with tight variable packing in contract /// storage. type SD1x18 is int64; /*////////////////////////////////////////////////////////////////////////// CASTING //////////////////////////////////////////////////////////////////////////*/ using { Casting.intoSD59x18, Casting.intoUD2x18, Casting.intoUD60x18, Casting.intoUint256, Casting.intoUint128, Casting.intoUint40, Casting.unwrap } for SD1x18 global;
// SPDX-License-Identifier: MIT pragma solidity >=0.8.19; import "./Errors.sol" as CastingErrors; import { MAX_UINT128, MAX_UINT40 } from "../Common.sol"; import { uMAX_SD1x18, uMIN_SD1x18 } from "../sd1x18/Constants.sol"; import { SD1x18 } from "../sd1x18/ValueType.sol"; import { uMAX_UD2x18 } from "../ud2x18/Constants.sol"; import { UD2x18 } from "../ud2x18/ValueType.sol"; import { UD60x18 } from "../ud60x18/ValueType.sol"; import { SD59x18 } from "./ValueType.sol"; /// @notice Casts an SD59x18 number into int256. /// @dev This is basically a functional alias for {unwrap}. function intoInt256(SD59x18 x) pure returns (int256 result) { result = SD59x18.unwrap(x); } /// @notice Casts an SD59x18 number into SD1x18. /// @dev Requirements: /// - x must be greater than or equal to `uMIN_SD1x18`. /// - x must be less than or equal to `uMAX_SD1x18`. function intoSD1x18(SD59x18 x) pure returns (SD1x18 result) { int256 xInt = SD59x18.unwrap(x); if (xInt < uMIN_SD1x18) { revert CastingErrors.PRBMath_SD59x18_IntoSD1x18_Underflow(x); } if (xInt > uMAX_SD1x18) { revert CastingErrors.PRBMath_SD59x18_IntoSD1x18_Overflow(x); } result = SD1x18.wrap(int64(xInt)); } /// @notice Casts an SD59x18 number into UD2x18. /// @dev Requirements: /// - x must be positive. /// - x must be less than or equal to `uMAX_UD2x18`. function intoUD2x18(SD59x18 x) pure returns (UD2x18 result) { int256 xInt = SD59x18.unwrap(x); if (xInt < 0) { revert CastingErrors.PRBMath_SD59x18_IntoUD2x18_Underflow(x); } if (xInt > int256(uint256(uMAX_UD2x18))) { revert CastingErrors.PRBMath_SD59x18_IntoUD2x18_Overflow(x); } result = UD2x18.wrap(uint64(uint256(xInt))); } /// @notice Casts an SD59x18 number into UD60x18. /// @dev Requirements: /// - x must be positive. function intoUD60x18(SD59x18 x) pure returns (UD60x18 result) { int256 xInt = SD59x18.unwrap(x); if (xInt < 0) { revert CastingErrors.PRBMath_SD59x18_IntoUD60x18_Underflow(x); } result = UD60x18.wrap(uint256(xInt)); } /// @notice Casts an SD59x18 number into uint256. /// @dev Requirements: /// - x must be positive. function intoUint256(SD59x18 x) pure returns (uint256 result) { int256 xInt = SD59x18.unwrap(x); if (xInt < 0) { revert CastingErrors.PRBMath_SD59x18_IntoUint256_Underflow(x); } result = uint256(xInt); } /// @notice Casts an SD59x18 number into uint128. /// @dev Requirements: /// - x must be positive. /// - x must be less than or equal to `uMAX_UINT128`. function intoUint128(SD59x18 x) pure returns (uint128 result) { int256 xInt = SD59x18.unwrap(x); if (xInt < 0) { revert CastingErrors.PRBMath_SD59x18_IntoUint128_Underflow(x); } if (xInt > int256(uint256(MAX_UINT128))) { revert CastingErrors.PRBMath_SD59x18_IntoUint128_Overflow(x); } result = uint128(uint256(xInt)); } /// @notice Casts an SD59x18 number into uint40. /// @dev Requirements: /// - x must be positive. /// - x must be less than or equal to `MAX_UINT40`. function intoUint40(SD59x18 x) pure returns (uint40 result) { int256 xInt = SD59x18.unwrap(x); if (xInt < 0) { revert CastingErrors.PRBMath_SD59x18_IntoUint40_Underflow(x); } if (xInt > int256(uint256(MAX_UINT40))) { revert CastingErrors.PRBMath_SD59x18_IntoUint40_Overflow(x); } result = uint40(uint256(xInt)); } /// @notice Alias for {wrap}. function sd(int256 x) pure returns (SD59x18 result) { result = SD59x18.wrap(x); } /// @notice Alias for {wrap}. function sd59x18(int256 x) pure returns (SD59x18 result) { result = SD59x18.wrap(x); } /// @notice Unwraps an SD59x18 number into int256. function unwrap(SD59x18 x) pure returns (int256 result) { result = SD59x18.unwrap(x); } /// @notice Wraps an int256 number into SD59x18. function wrap(int256 x) pure returns (SD59x18 result) { result = SD59x18.wrap(x); }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.19; import { SD59x18 } from "./ValueType.sol"; // NOTICE: the "u" prefix stands for "unwrapped". /// @dev Euler's number as an SD59x18 number. SD59x18 constant E = SD59x18.wrap(2_718281828459045235); /// @dev The maximum input permitted in {exp}. int256 constant uEXP_MAX_INPUT = 133_084258667509499440; SD59x18 constant EXP_MAX_INPUT = SD59x18.wrap(uEXP_MAX_INPUT); /// @dev The maximum input permitted in {exp2}. int256 constant uEXP2_MAX_INPUT = 192e18 - 1; SD59x18 constant EXP2_MAX_INPUT = SD59x18.wrap(uEXP2_MAX_INPUT); /// @dev Half the UNIT number. int256 constant uHALF_UNIT = 0.5e18; SD59x18 constant HALF_UNIT = SD59x18.wrap(uHALF_UNIT); /// @dev $log_2(10)$ as an SD59x18 number. int256 constant uLOG2_10 = 3_321928094887362347; SD59x18 constant LOG2_10 = SD59x18.wrap(uLOG2_10); /// @dev $log_2(e)$ as an SD59x18 number. int256 constant uLOG2_E = 1_442695040888963407; SD59x18 constant LOG2_E = SD59x18.wrap(uLOG2_E); /// @dev The maximum value an SD59x18 number can have. int256 constant uMAX_SD59x18 = 57896044618658097711785492504343953926634992332820282019728_792003956564819967; SD59x18 constant MAX_SD59x18 = SD59x18.wrap(uMAX_SD59x18); /// @dev The maximum whole value an SD59x18 number can have. int256 constant uMAX_WHOLE_SD59x18 = 57896044618658097711785492504343953926634992332820282019728_000000000000000000; SD59x18 constant MAX_WHOLE_SD59x18 = SD59x18.wrap(uMAX_WHOLE_SD59x18); /// @dev The minimum value an SD59x18 number can have. int256 constant uMIN_SD59x18 = -57896044618658097711785492504343953926634992332820282019728_792003956564819968; SD59x18 constant MIN_SD59x18 = SD59x18.wrap(uMIN_SD59x18); /// @dev The minimum whole value an SD59x18 number can have. int256 constant uMIN_WHOLE_SD59x18 = -57896044618658097711785492504343953926634992332820282019728_000000000000000000; SD59x18 constant MIN_WHOLE_SD59x18 = SD59x18.wrap(uMIN_WHOLE_SD59x18); /// @dev PI as an SD59x18 number. SD59x18 constant PI = SD59x18.wrap(3_141592653589793238); /// @dev The unit number, which gives the decimal precision of SD59x18. int256 constant uUNIT = 1e18; SD59x18 constant UNIT = SD59x18.wrap(1e18); /// @dev The unit number squared. int256 constant uUNIT_SQUARED = 1e36; SD59x18 constant UNIT_SQUARED = SD59x18.wrap(uUNIT_SQUARED); /// @dev Zero as an SD59x18 number. SD59x18 constant ZERO = SD59x18.wrap(0);
// SPDX-License-Identifier: MIT pragma solidity >=0.8.19; import { SD59x18 } from "./ValueType.sol"; /// @notice Thrown when taking the absolute value of `MIN_SD59x18`. error PRBMath_SD59x18_Abs_MinSD59x18(); /// @notice Thrown when ceiling a number overflows SD59x18. error PRBMath_SD59x18_Ceil_Overflow(SD59x18 x); /// @notice Thrown when converting a basic integer to the fixed-point format overflows SD59x18. error PRBMath_SD59x18_Convert_Overflow(int256 x); /// @notice Thrown when converting a basic integer to the fixed-point format underflows SD59x18. error PRBMath_SD59x18_Convert_Underflow(int256 x); /// @notice Thrown when dividing two numbers and one of them is `MIN_SD59x18`. error PRBMath_SD59x18_Div_InputTooSmall(); /// @notice Thrown when dividing two numbers and one of the intermediary unsigned results overflows SD59x18. error PRBMath_SD59x18_Div_Overflow(SD59x18 x, SD59x18 y); /// @notice Thrown when taking the natural exponent of a base greater than 133_084258667509499441. error PRBMath_SD59x18_Exp_InputTooBig(SD59x18 x); /// @notice Thrown when taking the binary exponent of a base greater than 192e18. error PRBMath_SD59x18_Exp2_InputTooBig(SD59x18 x); /// @notice Thrown when flooring a number underflows SD59x18. error PRBMath_SD59x18_Floor_Underflow(SD59x18 x); /// @notice Thrown when taking the geometric mean of two numbers and their product is negative. error PRBMath_SD59x18_Gm_NegativeProduct(SD59x18 x, SD59x18 y); /// @notice Thrown when taking the geometric mean of two numbers and multiplying them overflows SD59x18. error PRBMath_SD59x18_Gm_Overflow(SD59x18 x, SD59x18 y); /// @notice Thrown when trying to cast a UD60x18 number that doesn't fit in SD1x18. error PRBMath_SD59x18_IntoSD1x18_Overflow(SD59x18 x); /// @notice Thrown when trying to cast a UD60x18 number that doesn't fit in SD1x18. error PRBMath_SD59x18_IntoSD1x18_Underflow(SD59x18 x); /// @notice Thrown when trying to cast a UD60x18 number that doesn't fit in UD2x18. error PRBMath_SD59x18_IntoUD2x18_Overflow(SD59x18 x); /// @notice Thrown when trying to cast a UD60x18 number that doesn't fit in UD2x18. error PRBMath_SD59x18_IntoUD2x18_Underflow(SD59x18 x); /// @notice Thrown when trying to cast a UD60x18 number that doesn't fit in UD60x18. error PRBMath_SD59x18_IntoUD60x18_Underflow(SD59x18 x); /// @notice Thrown when trying to cast a UD60x18 number that doesn't fit in uint128. error PRBMath_SD59x18_IntoUint128_Overflow(SD59x18 x); /// @notice Thrown when trying to cast a UD60x18 number that doesn't fit in uint128. error PRBMath_SD59x18_IntoUint128_Underflow(SD59x18 x); /// @notice Thrown when trying to cast a UD60x18 number that doesn't fit in uint256. error PRBMath_SD59x18_IntoUint256_Underflow(SD59x18 x); /// @notice Thrown when trying to cast a UD60x18 number that doesn't fit in uint40. error PRBMath_SD59x18_IntoUint40_Overflow(SD59x18 x); /// @notice Thrown when trying to cast a UD60x18 number that doesn't fit in uint40. error PRBMath_SD59x18_IntoUint40_Underflow(SD59x18 x); /// @notice Thrown when taking the logarithm of a number less than or equal to zero. error PRBMath_SD59x18_Log_InputTooSmall(SD59x18 x); /// @notice Thrown when multiplying two numbers and one of the inputs is `MIN_SD59x18`. error PRBMath_SD59x18_Mul_InputTooSmall(); /// @notice Thrown when multiplying two numbers and the intermediary absolute result overflows SD59x18. error PRBMath_SD59x18_Mul_Overflow(SD59x18 x, SD59x18 y); /// @notice Thrown when raising a number to a power and the intermediary absolute result overflows SD59x18. error PRBMath_SD59x18_Powu_Overflow(SD59x18 x, uint256 y); /// @notice Thrown when taking the square root of a negative number. error PRBMath_SD59x18_Sqrt_NegativeInput(SD59x18 x); /// @notice Thrown when the calculating the square root overflows SD59x18. error PRBMath_SD59x18_Sqrt_Overflow(SD59x18 x);
// SPDX-License-Identifier: MIT pragma solidity >=0.8.19; import { wrap } from "./Casting.sol"; import { SD59x18 } from "./ValueType.sol"; /// @notice Implements the checked addition operation (+) in the SD59x18 type. function add(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) { return wrap(x.unwrap() + y.unwrap()); } /// @notice Implements the AND (&) bitwise operation in the SD59x18 type. function and(SD59x18 x, int256 bits) pure returns (SD59x18 result) { return wrap(x.unwrap() & bits); } /// @notice Implements the AND (&) bitwise operation in the SD59x18 type. function and2(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) { return wrap(x.unwrap() & y.unwrap()); } /// @notice Implements the equal (=) operation in the SD59x18 type. function eq(SD59x18 x, SD59x18 y) pure returns (bool result) { result = x.unwrap() == y.unwrap(); } /// @notice Implements the greater than operation (>) in the SD59x18 type. function gt(SD59x18 x, SD59x18 y) pure returns (bool result) { result = x.unwrap() > y.unwrap(); } /// @notice Implements the greater than or equal to operation (>=) in the SD59x18 type. function gte(SD59x18 x, SD59x18 y) pure returns (bool result) { result = x.unwrap() >= y.unwrap(); } /// @notice Implements a zero comparison check function in the SD59x18 type. function isZero(SD59x18 x) pure returns (bool result) { result = x.unwrap() == 0; } /// @notice Implements the left shift operation (<<) in the SD59x18 type. function lshift(SD59x18 x, uint256 bits) pure returns (SD59x18 result) { result = wrap(x.unwrap() << bits); } /// @notice Implements the lower than operation (<) in the SD59x18 type. function lt(SD59x18 x, SD59x18 y) pure returns (bool result) { result = x.unwrap() < y.unwrap(); } /// @notice Implements the lower than or equal to operation (<=) in the SD59x18 type. function lte(SD59x18 x, SD59x18 y) pure returns (bool result) { result = x.unwrap() <= y.unwrap(); } /// @notice Implements the unchecked modulo operation (%) in the SD59x18 type. function mod(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) { result = wrap(x.unwrap() % y.unwrap()); } /// @notice Implements the not equal operation (!=) in the SD59x18 type. function neq(SD59x18 x, SD59x18 y) pure returns (bool result) { result = x.unwrap() != y.unwrap(); } /// @notice Implements the NOT (~) bitwise operation in the SD59x18 type. function not(SD59x18 x) pure returns (SD59x18 result) { result = wrap(~x.unwrap()); } /// @notice Implements the OR (|) bitwise operation in the SD59x18 type. function or(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) { result = wrap(x.unwrap() | y.unwrap()); } /// @notice Implements the right shift operation (>>) in the SD59x18 type. function rshift(SD59x18 x, uint256 bits) pure returns (SD59x18 result) { result = wrap(x.unwrap() >> bits); } /// @notice Implements the checked subtraction operation (-) in the SD59x18 type. function sub(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) { result = wrap(x.unwrap() - y.unwrap()); } /// @notice Implements the checked unary minus operation (-) in the SD59x18 type. function unary(SD59x18 x) pure returns (SD59x18 result) { result = wrap(-x.unwrap()); } /// @notice Implements the unchecked addition operation (+) in the SD59x18 type. function uncheckedAdd(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) { unchecked { result = wrap(x.unwrap() + y.unwrap()); } } /// @notice Implements the unchecked subtraction operation (-) in the SD59x18 type. function uncheckedSub(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) { unchecked { result = wrap(x.unwrap() - y.unwrap()); } } /// @notice Implements the unchecked unary minus operation (-) in the SD59x18 type. function uncheckedUnary(SD59x18 x) pure returns (SD59x18 result) { unchecked { result = wrap(-x.unwrap()); } } /// @notice Implements the XOR (^) bitwise operation in the SD59x18 type. function xor(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) { result = wrap(x.unwrap() ^ y.unwrap()); }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.19; import "../Common.sol" as Common; import "./Errors.sol" as Errors; import { uEXP_MAX_INPUT, uEXP2_MAX_INPUT, uHALF_UNIT, uLOG2_10, uLOG2_E, uMAX_SD59x18, uMAX_WHOLE_SD59x18, uMIN_SD59x18, uMIN_WHOLE_SD59x18, UNIT, uUNIT, uUNIT_SQUARED, ZERO } from "./Constants.sol"; import { wrap } from "./Helpers.sol"; import { SD59x18 } from "./ValueType.sol"; /// @notice Calculates the absolute value of x. /// /// @dev Requirements: /// - x must be greater than `MIN_SD59x18`. /// /// @param x The SD59x18 number for which to calculate the absolute value. /// @param result The absolute value of x as an SD59x18 number. /// @custom:smtchecker abstract-function-nondet function abs(SD59x18 x) pure returns (SD59x18 result) { int256 xInt = x.unwrap(); if (xInt == uMIN_SD59x18) { revert Errors.PRBMath_SD59x18_Abs_MinSD59x18(); } result = xInt < 0 ? wrap(-xInt) : x; } /// @notice Calculates the arithmetic average of x and y. /// /// @dev Notes: /// - The result is rounded toward zero. /// /// @param x The first operand as an SD59x18 number. /// @param y The second operand as an SD59x18 number. /// @return result The arithmetic average as an SD59x18 number. /// @custom:smtchecker abstract-function-nondet function avg(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) { int256 xInt = x.unwrap(); int256 yInt = y.unwrap(); unchecked { // This operation is equivalent to `x / 2 + y / 2`, and it can never overflow. int256 sum = (xInt >> 1) + (yInt >> 1); if (sum < 0) { // If at least one of x and y is odd, add 1 to the result, because shifting negative numbers to the right // rounds toward negative infinity. The right part is equivalent to `sum + (x % 2 == 1 || y % 2 == 1)`. assembly ("memory-safe") { result := add(sum, and(or(xInt, yInt), 1)) } } else { // Add 1 if both x and y are odd to account for the double 0.5 remainder truncated after shifting. result = wrap(sum + (xInt & yInt & 1)); } } } /// @notice Yields the smallest whole number greater than or equal to x. /// /// @dev Optimized for fractional value inputs, because every whole value has (1e18 - 1) fractional counterparts. /// See https://en.wikipedia.org/wiki/Floor_and_ceiling_functions. /// /// Requirements: /// - x must be less than or equal to `MAX_WHOLE_SD59x18`. /// /// @param x The SD59x18 number to ceil. /// @param result The smallest whole number greater than or equal to x, as an SD59x18 number. /// @custom:smtchecker abstract-function-nondet function ceil(SD59x18 x) pure returns (SD59x18 result) { int256 xInt = x.unwrap(); if (xInt > uMAX_WHOLE_SD59x18) { revert Errors.PRBMath_SD59x18_Ceil_Overflow(x); } int256 remainder = xInt % uUNIT; if (remainder == 0) { result = x; } else { unchecked { // Solidity uses C fmod style, which returns a modulus with the same sign as x. int256 resultInt = xInt - remainder; if (xInt > 0) { resultInt += uUNIT; } result = wrap(resultInt); } } } /// @notice Divides two SD59x18 numbers, returning a new SD59x18 number. /// /// @dev This is an extension of {Common.mulDiv} for signed numbers, which works by computing the signs and the absolute /// values separately. /// /// Notes: /// - Refer to the notes in {Common.mulDiv}. /// - The result is rounded toward zero. /// /// Requirements: /// - Refer to the requirements in {Common.mulDiv}. /// - None of the inputs can be `MIN_SD59x18`. /// - The denominator must not be zero. /// - The result must fit in SD59x18. /// /// @param x The numerator as an SD59x18 number. /// @param y The denominator as an SD59x18 number. /// @param result The quotient as an SD59x18 number. /// @custom:smtchecker abstract-function-nondet function div(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) { int256 xInt = x.unwrap(); int256 yInt = y.unwrap(); if (xInt == uMIN_SD59x18 || yInt == uMIN_SD59x18) { revert Errors.PRBMath_SD59x18_Div_InputTooSmall(); } // Get hold of the absolute values of x and y. uint256 xAbs; uint256 yAbs; unchecked { xAbs = xInt < 0 ? uint256(-xInt) : uint256(xInt); yAbs = yInt < 0 ? uint256(-yInt) : uint256(yInt); } // Compute the absolute value (x*UNIT÷y). The resulting value must fit in SD59x18. uint256 resultAbs = Common.mulDiv(xAbs, uint256(uUNIT), yAbs); if (resultAbs > uint256(uMAX_SD59x18)) { revert Errors.PRBMath_SD59x18_Div_Overflow(x, y); } // Check if x and y have the same sign using two's complement representation. The left-most bit represents the sign (1 for // negative, 0 for positive or zero). bool sameSign = (xInt ^ yInt) > -1; // If the inputs have the same sign, the result should be positive. Otherwise, it should be negative. unchecked { result = wrap(sameSign ? int256(resultAbs) : -int256(resultAbs)); } } /// @notice Calculates the natural exponent of x using the following formula: /// /// $$ /// e^x = 2^{x * log_2{e}} /// $$ /// /// @dev Notes: /// - Refer to the notes in {exp2}. /// /// Requirements: /// - Refer to the requirements in {exp2}. /// - x must be less than 133_084258667509499441. /// /// @param x The exponent as an SD59x18 number. /// @return result The result as an SD59x18 number. /// @custom:smtchecker abstract-function-nondet function exp(SD59x18 x) pure returns (SD59x18 result) { int256 xInt = x.unwrap(); // This check prevents values greater than 192e18 from being passed to {exp2}. if (xInt > uEXP_MAX_INPUT) { revert Errors.PRBMath_SD59x18_Exp_InputTooBig(x); } unchecked { // Inline the fixed-point multiplication to save gas. int256 doubleUnitProduct = xInt * uLOG2_E; result = exp2(wrap(doubleUnitProduct / uUNIT)); } } /// @notice Calculates the binary exponent of x using the binary fraction method using the following formula: /// /// $$ /// 2^{-x} = \frac{1}{2^x} /// $$ /// /// @dev See https://ethereum.stackexchange.com/q/79903/24693. /// /// Notes: /// - If x is less than -59_794705707972522261, the result is zero. /// /// Requirements: /// - x must be less than 192e18. /// - The result must fit in SD59x18. /// /// @param x The exponent as an SD59x18 number. /// @return result The result as an SD59x18 number. /// @custom:smtchecker abstract-function-nondet function exp2(SD59x18 x) pure returns (SD59x18 result) { int256 xInt = x.unwrap(); if (xInt < 0) { // The inverse of any number less than this is truncated to zero. if (xInt < -59_794705707972522261) { return ZERO; } unchecked { // Inline the fixed-point inversion to save gas. result = wrap(uUNIT_SQUARED / exp2(wrap(-xInt)).unwrap()); } } else { // Numbers greater than or equal to 192e18 don't fit in the 192.64-bit format. if (xInt > uEXP2_MAX_INPUT) { revert Errors.PRBMath_SD59x18_Exp2_InputTooBig(x); } unchecked { // Convert x to the 192.64-bit fixed-point format. uint256 x_192x64 = uint256((xInt << 64) / uUNIT); // It is safe to cast the result to int256 due to the checks above. result = wrap(int256(Common.exp2(x_192x64))); } } } /// @notice Yields the greatest whole number less than or equal to x. /// /// @dev Optimized for fractional value inputs, because for every whole value there are (1e18 - 1) fractional /// counterparts. See https://en.wikipedia.org/wiki/Floor_and_ceiling_functions. /// /// Requirements: /// - x must be greater than or equal to `MIN_WHOLE_SD59x18`. /// /// @param x The SD59x18 number to floor. /// @param result The greatest whole number less than or equal to x, as an SD59x18 number. /// @custom:smtchecker abstract-function-nondet function floor(SD59x18 x) pure returns (SD59x18 result) { int256 xInt = x.unwrap(); if (xInt < uMIN_WHOLE_SD59x18) { revert Errors.PRBMath_SD59x18_Floor_Underflow(x); } int256 remainder = xInt % uUNIT; if (remainder == 0) { result = x; } else { unchecked { // Solidity uses C fmod style, which returns a modulus with the same sign as x. int256 resultInt = xInt - remainder; if (xInt < 0) { resultInt -= uUNIT; } result = wrap(resultInt); } } } /// @notice Yields the excess beyond the floor of x for positive numbers and the part of the number to the right. /// of the radix point for negative numbers. /// @dev Based on the odd function definition. https://en.wikipedia.org/wiki/Fractional_part /// @param x The SD59x18 number to get the fractional part of. /// @param result The fractional part of x as an SD59x18 number. function frac(SD59x18 x) pure returns (SD59x18 result) { result = wrap(x.unwrap() % uUNIT); } /// @notice Calculates the geometric mean of x and y, i.e. $\sqrt{x * y}$. /// /// @dev Notes: /// - The result is rounded toward zero. /// /// Requirements: /// - x * y must fit in SD59x18. /// - x * y must not be negative, since complex numbers are not supported. /// /// @param x The first operand as an SD59x18 number. /// @param y The second operand as an SD59x18 number. /// @return result The result as an SD59x18 number. /// @custom:smtchecker abstract-function-nondet function gm(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) { int256 xInt = x.unwrap(); int256 yInt = y.unwrap(); if (xInt == 0 || yInt == 0) { return ZERO; } unchecked { // Equivalent to `xy / x != y`. Checking for overflow this way is faster than letting Solidity do it. int256 xyInt = xInt * yInt; if (xyInt / xInt != yInt) { revert Errors.PRBMath_SD59x18_Gm_Overflow(x, y); } // The product must not be negative, since complex numbers are not supported. if (xyInt < 0) { revert Errors.PRBMath_SD59x18_Gm_NegativeProduct(x, y); } // We don't need to multiply the result by `UNIT` here because the x*y product picked up a factor of `UNIT` // during multiplication. See the comments in {Common.sqrt}. uint256 resultUint = Common.sqrt(uint256(xyInt)); result = wrap(int256(resultUint)); } } /// @notice Calculates the inverse of x. /// /// @dev Notes: /// - The result is rounded toward zero. /// /// Requirements: /// - x must not be zero. /// /// @param x The SD59x18 number for which to calculate the inverse. /// @return result The inverse as an SD59x18 number. /// @custom:smtchecker abstract-function-nondet function inv(SD59x18 x) pure returns (SD59x18 result) { result = wrap(uUNIT_SQUARED / x.unwrap()); } /// @notice Calculates the natural logarithm of x using the following formula: /// /// $$ /// ln{x} = log_2{x} / log_2{e} /// $$ /// /// @dev Notes: /// - Refer to the notes in {log2}. /// - The precision isn't sufficiently fine-grained to return exactly `UNIT` when the input is `E`. /// /// Requirements: /// - Refer to the requirements in {log2}. /// /// @param x The SD59x18 number for which to calculate the natural logarithm. /// @return result The natural logarithm as an SD59x18 number. /// @custom:smtchecker abstract-function-nondet function ln(SD59x18 x) pure returns (SD59x18 result) { // Inline the fixed-point multiplication to save gas. This is overflow-safe because the maximum value that // {log2} can return is ~195_205294292027477728. result = wrap(log2(x).unwrap() * uUNIT / uLOG2_E); } /// @notice Calculates the common logarithm of x using the following formula: /// /// $$ /// log_{10}{x} = log_2{x} / log_2{10} /// $$ /// /// However, if x is an exact power of ten, a hard coded value is returned. /// /// @dev Notes: /// - Refer to the notes in {log2}. /// /// Requirements: /// - Refer to the requirements in {log2}. /// /// @param x The SD59x18 number for which to calculate the common logarithm. /// @return result The common logarithm as an SD59x18 number. /// @custom:smtchecker abstract-function-nondet function log10(SD59x18 x) pure returns (SD59x18 result) { int256 xInt = x.unwrap(); if (xInt < 0) { revert Errors.PRBMath_SD59x18_Log_InputTooSmall(x); } // Note that the `mul` in this block is the standard multiplication operation, not {SD59x18.mul}. // prettier-ignore assembly ("memory-safe") { switch x case 1 { result := mul(uUNIT, sub(0, 18)) } case 10 { result := mul(uUNIT, sub(1, 18)) } case 100 { result := mul(uUNIT, sub(2, 18)) } case 1000 { result := mul(uUNIT, sub(3, 18)) } case 10000 { result := mul(uUNIT, sub(4, 18)) } case 100000 { result := mul(uUNIT, sub(5, 18)) } case 1000000 { result := mul(uUNIT, sub(6, 18)) } case 10000000 { result := mul(uUNIT, sub(7, 18)) } case 100000000 { result := mul(uUNIT, sub(8, 18)) } case 1000000000 { result := mul(uUNIT, sub(9, 18)) } case 10000000000 { result := mul(uUNIT, sub(10, 18)) } case 100000000000 { result := mul(uUNIT, sub(11, 18)) } case 1000000000000 { result := mul(uUNIT, sub(12, 18)) } case 10000000000000 { result := mul(uUNIT, sub(13, 18)) } case 100000000000000 { result := mul(uUNIT, sub(14, 18)) } case 1000000000000000 { result := mul(uUNIT, sub(15, 18)) } case 10000000000000000 { result := mul(uUNIT, sub(16, 18)) } case 100000000000000000 { result := mul(uUNIT, sub(17, 18)) } case 1000000000000000000 { result := 0 } case 10000000000000000000 { result := uUNIT } case 100000000000000000000 { result := mul(uUNIT, 2) } case 1000000000000000000000 { result := mul(uUNIT, 3) } case 10000000000000000000000 { result := mul(uUNIT, 4) } case 100000000000000000000000 { result := mul(uUNIT, 5) } case 1000000000000000000000000 { result := mul(uUNIT, 6) } case 10000000000000000000000000 { result := mul(uUNIT, 7) } case 100000000000000000000000000 { result := mul(uUNIT, 8) } case 1000000000000000000000000000 { result := mul(uUNIT, 9) } case 10000000000000000000000000000 { result := mul(uUNIT, 10) } case 100000000000000000000000000000 { result := mul(uUNIT, 11) } case 1000000000000000000000000000000 { result := mul(uUNIT, 12) } case 10000000000000000000000000000000 { result := mul(uUNIT, 13) } case 100000000000000000000000000000000 { result := mul(uUNIT, 14) } case 1000000000000000000000000000000000 { result := mul(uUNIT, 15) } case 10000000000000000000000000000000000 { result := mul(uUNIT, 16) } case 100000000000000000000000000000000000 { result := mul(uUNIT, 17) } case 1000000000000000000000000000000000000 { result := mul(uUNIT, 18) } case 10000000000000000000000000000000000000 { result := mul(uUNIT, 19) } case 100000000000000000000000000000000000000 { result := mul(uUNIT, 20) } case 1000000000000000000000000000000000000000 { result := mul(uUNIT, 21) } case 10000000000000000000000000000000000000000 { result := mul(uUNIT, 22) } case 100000000000000000000000000000000000000000 { result := mul(uUNIT, 23) } case 1000000000000000000000000000000000000000000 { result := mul(uUNIT, 24) } case 10000000000000000000000000000000000000000000 { result := mul(uUNIT, 25) } case 100000000000000000000000000000000000000000000 { result := mul(uUNIT, 26) } case 1000000000000000000000000000000000000000000000 { result := mul(uUNIT, 27) } case 10000000000000000000000000000000000000000000000 { result := mul(uUNIT, 28) } case 100000000000000000000000000000000000000000000000 { result := mul(uUNIT, 29) } case 1000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 30) } case 10000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 31) } case 100000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 32) } case 1000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 33) } case 10000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 34) } case 100000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 35) } case 1000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 36) } case 10000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 37) } case 100000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 38) } case 1000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 39) } case 10000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 40) } case 100000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 41) } case 1000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 42) } case 10000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 43) } case 100000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 44) } case 1000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 45) } case 10000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 46) } case 100000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 47) } case 1000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 48) } case 10000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 49) } case 100000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 50) } case 1000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 51) } case 10000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 52) } case 100000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 53) } case 1000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 54) } case 10000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 55) } case 100000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 56) } case 1000000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 57) } case 10000000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 58) } default { result := uMAX_SD59x18 } } if (result.unwrap() == uMAX_SD59x18) { unchecked { // Inline the fixed-point division to save gas. result = wrap(log2(x).unwrap() * uUNIT / uLOG2_10); } } } /// @notice Calculates the binary logarithm of x using the iterative approximation algorithm: /// /// $$ /// log_2{x} = n + log_2{y}, \text{ where } y = x*2^{-n}, \ y \in [1, 2) /// $$ /// /// For $0 \leq x \lt 1$, the input is inverted: /// /// $$ /// log_2{x} = -log_2{\frac{1}{x}} /// $$ /// /// @dev See https://en.wikipedia.org/wiki/Binary_logarithm#Iterative_approximation. /// /// Notes: /// - Due to the lossy precision of the iterative approximation, the results are not perfectly accurate to the last decimal. /// /// Requirements: /// - x must be greater than zero. /// /// @param x The SD59x18 number for which to calculate the binary logarithm. /// @return result The binary logarithm as an SD59x18 number. /// @custom:smtchecker abstract-function-nondet function log2(SD59x18 x) pure returns (SD59x18 result) { int256 xInt = x.unwrap(); if (xInt <= 0) { revert Errors.PRBMath_SD59x18_Log_InputTooSmall(x); } unchecked { int256 sign; if (xInt >= uUNIT) { sign = 1; } else { sign = -1; // Inline the fixed-point inversion to save gas. xInt = uUNIT_SQUARED / xInt; } // Calculate the integer part of the logarithm. uint256 n = Common.msb(uint256(xInt / uUNIT)); // This is the integer part of the logarithm as an SD59x18 number. The operation can't overflow // because n is at most 255, `UNIT` is 1e18, and the sign is either 1 or -1. int256 resultInt = int256(n) * uUNIT; // Calculate $y = x * 2^{-n}$. int256 y = xInt >> n; // If y is the unit number, the fractional part is zero. if (y == uUNIT) { return wrap(resultInt * sign); } // Calculate the fractional part via the iterative approximation. // The `delta >>= 1` part is equivalent to `delta /= 2`, but shifting bits is more gas efficient. int256 DOUBLE_UNIT = 2e18; for (int256 delta = uHALF_UNIT; delta > 0; delta >>= 1) { y = (y * y) / uUNIT; // Is y^2 >= 2e18 and so in the range [2e18, 4e18)? if (y >= DOUBLE_UNIT) { // Add the 2^{-m} factor to the logarithm. resultInt = resultInt + delta; // Halve y, which corresponds to z/2 in the Wikipedia article. y >>= 1; } } resultInt *= sign; result = wrap(resultInt); } } /// @notice Multiplies two SD59x18 numbers together, returning a new SD59x18 number. /// /// @dev Notes: /// - Refer to the notes in {Common.mulDiv18}. /// /// Requirements: /// - Refer to the requirements in {Common.mulDiv18}. /// - None of the inputs can be `MIN_SD59x18`. /// - The result must fit in SD59x18. /// /// @param x The multiplicand as an SD59x18 number. /// @param y The multiplier as an SD59x18 number. /// @return result The product as an SD59x18 number. /// @custom:smtchecker abstract-function-nondet function mul(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) { int256 xInt = x.unwrap(); int256 yInt = y.unwrap(); if (xInt == uMIN_SD59x18 || yInt == uMIN_SD59x18) { revert Errors.PRBMath_SD59x18_Mul_InputTooSmall(); } // Get hold of the absolute values of x and y. uint256 xAbs; uint256 yAbs; unchecked { xAbs = xInt < 0 ? uint256(-xInt) : uint256(xInt); yAbs = yInt < 0 ? uint256(-yInt) : uint256(yInt); } // Compute the absolute value (x*y÷UNIT). The resulting value must fit in SD59x18. uint256 resultAbs = Common.mulDiv18(xAbs, yAbs); if (resultAbs > uint256(uMAX_SD59x18)) { revert Errors.PRBMath_SD59x18_Mul_Overflow(x, y); } // Check if x and y have the same sign using two's complement representation. The left-most bit represents the sign (1 for // negative, 0 for positive or zero). bool sameSign = (xInt ^ yInt) > -1; // If the inputs have the same sign, the result should be positive. Otherwise, it should be negative. unchecked { result = wrap(sameSign ? int256(resultAbs) : -int256(resultAbs)); } } /// @notice Raises x to the power of y using the following formula: /// /// $$ /// x^y = 2^{log_2{x} * y} /// $$ /// /// @dev Notes: /// - Refer to the notes in {exp2}, {log2}, and {mul}. /// - Returns `UNIT` for 0^0. /// /// Requirements: /// - Refer to the requirements in {exp2}, {log2}, and {mul}. /// /// @param x The base as an SD59x18 number. /// @param y Exponent to raise x to, as an SD59x18 number /// @return result x raised to power y, as an SD59x18 number. /// @custom:smtchecker abstract-function-nondet function pow(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) { int256 xInt = x.unwrap(); int256 yInt = y.unwrap(); // If both x and y are zero, the result is `UNIT`. If just x is zero, the result is always zero. if (xInt == 0) { return yInt == 0 ? UNIT : ZERO; } // If x is `UNIT`, the result is always `UNIT`. else if (xInt == uUNIT) { return UNIT; } // If y is zero, the result is always `UNIT`. if (yInt == 0) { return UNIT; } // If y is `UNIT`, the result is always x. else if (yInt == uUNIT) { return x; } // Calculate the result using the formula. result = exp2(mul(log2(x), y)); } /// @notice Raises x (an SD59x18 number) to the power y (an unsigned basic integer) using the well-known /// algorithm "exponentiation by squaring". /// /// @dev See https://en.wikipedia.org/wiki/Exponentiation_by_squaring. /// /// Notes: /// - Refer to the notes in {Common.mulDiv18}. /// - Returns `UNIT` for 0^0. /// /// Requirements: /// - Refer to the requirements in {abs} and {Common.mulDiv18}. /// - The result must fit in SD59x18. /// /// @param x The base as an SD59x18 number. /// @param y The exponent as a uint256. /// @return result The result as an SD59x18 number. /// @custom:smtchecker abstract-function-nondet function powu(SD59x18 x, uint256 y) pure returns (SD59x18 result) { uint256 xAbs = uint256(abs(x).unwrap()); // Calculate the first iteration of the loop in advance. uint256 resultAbs = y & 1 > 0 ? xAbs : uint256(uUNIT); // Equivalent to `for(y /= 2; y > 0; y /= 2)`. uint256 yAux = y; for (yAux >>= 1; yAux > 0; yAux >>= 1) { xAbs = Common.mulDiv18(xAbs, xAbs); // Equivalent to `y % 2 == 1`. if (yAux & 1 > 0) { resultAbs = Common.mulDiv18(resultAbs, xAbs); } } // The result must fit in SD59x18. if (resultAbs > uint256(uMAX_SD59x18)) { revert Errors.PRBMath_SD59x18_Powu_Overflow(x, y); } unchecked { // Is the base negative and the exponent odd? If yes, the result should be negative. int256 resultInt = int256(resultAbs); bool isNegative = x.unwrap() < 0 && y & 1 == 1; if (isNegative) { resultInt = -resultInt; } result = wrap(resultInt); } } /// @notice Calculates the square root of x using the Babylonian method. /// /// @dev See https://en.wikipedia.org/wiki/Methods_of_computing_square_roots#Babylonian_method. /// /// Notes: /// - Only the positive root is returned. /// - The result is rounded toward zero. /// /// Requirements: /// - x cannot be negative, since complex numbers are not supported. /// - x must be less than `MAX_SD59x18 / UNIT`. /// /// @param x The SD59x18 number for which to calculate the square root. /// @return result The result as an SD59x18 number. /// @custom:smtchecker abstract-function-nondet function sqrt(SD59x18 x) pure returns (SD59x18 result) { int256 xInt = x.unwrap(); if (xInt < 0) { revert Errors.PRBMath_SD59x18_Sqrt_NegativeInput(x); } if (xInt > uMAX_SD59x18 / uUNIT) { revert Errors.PRBMath_SD59x18_Sqrt_Overflow(x); } unchecked { // Multiply x by `UNIT` to account for the factor of `UNIT` picked up when multiplying two SD59x18 numbers. // In this case, the two numbers are both the square root. uint256 resultUint = Common.sqrt(uint256(xInt * uUNIT)); result = wrap(int256(resultUint)); } }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.19; import "./Casting.sol" as Casting; import "./Helpers.sol" as Helpers; import "./Math.sol" as Math; /// @notice The signed 59.18-decimal fixed-point number representation, which can have up to 59 digits and up to 18 /// decimals. The values of this are bound by the minimum and the maximum values permitted by the underlying Solidity /// type int256. type SD59x18 is int256; /*////////////////////////////////////////////////////////////////////////// CASTING //////////////////////////////////////////////////////////////////////////*/ using { Casting.intoInt256, Casting.intoSD1x18, Casting.intoUD2x18, Casting.intoUD60x18, Casting.intoUint256, Casting.intoUint128, Casting.intoUint40, Casting.unwrap } for SD59x18 global; /*////////////////////////////////////////////////////////////////////////// MATHEMATICAL FUNCTIONS //////////////////////////////////////////////////////////////////////////*/ using { Math.abs, Math.avg, Math.ceil, Math.div, Math.exp, Math.exp2, Math.floor, Math.frac, Math.gm, Math.inv, Math.log10, Math.log2, Math.ln, Math.mul, Math.pow, Math.powu, Math.sqrt } for SD59x18 global; /*////////////////////////////////////////////////////////////////////////// HELPER FUNCTIONS //////////////////////////////////////////////////////////////////////////*/ using { Helpers.add, Helpers.and, Helpers.eq, Helpers.gt, Helpers.gte, Helpers.isZero, Helpers.lshift, Helpers.lt, Helpers.lte, Helpers.mod, Helpers.neq, Helpers.not, Helpers.or, Helpers.rshift, Helpers.sub, Helpers.uncheckedAdd, Helpers.uncheckedSub, Helpers.uncheckedUnary, Helpers.xor } for SD59x18 global; /*////////////////////////////////////////////////////////////////////////// OPERATORS //////////////////////////////////////////////////////////////////////////*/ // The global "using for" directive makes it possible to use these operators on the SD59x18 type. using { Helpers.add as +, Helpers.and2 as &, Math.div as /, Helpers.eq as ==, Helpers.gt as >, Helpers.gte as >=, Helpers.lt as <, Helpers.lte as <=, Helpers.mod as %, Math.mul as *, Helpers.neq as !=, Helpers.not as ~, Helpers.or as |, Helpers.sub as -, Helpers.unary as -, Helpers.xor as ^ } for SD59x18 global;
// SPDX-License-Identifier: MIT pragma solidity >=0.8.19; import "../Common.sol" as Common; import "./Errors.sol" as Errors; import { uMAX_SD1x18 } from "../sd1x18/Constants.sol"; import { SD1x18 } from "../sd1x18/ValueType.sol"; import { SD59x18 } from "../sd59x18/ValueType.sol"; import { UD60x18 } from "../ud60x18/ValueType.sol"; import { UD2x18 } from "./ValueType.sol"; /// @notice Casts a UD2x18 number into SD1x18. /// - x must be less than or equal to `uMAX_SD1x18`. function intoSD1x18(UD2x18 x) pure returns (SD1x18 result) { uint64 xUint = UD2x18.unwrap(x); if (xUint > uint64(uMAX_SD1x18)) { revert Errors.PRBMath_UD2x18_IntoSD1x18_Overflow(x); } result = SD1x18.wrap(int64(xUint)); } /// @notice Casts a UD2x18 number into SD59x18. /// @dev There is no overflow check because the domain of UD2x18 is a subset of SD59x18. function intoSD59x18(UD2x18 x) pure returns (SD59x18 result) { result = SD59x18.wrap(int256(uint256(UD2x18.unwrap(x)))); } /// @notice Casts a UD2x18 number into UD60x18. /// @dev There is no overflow check because the domain of UD2x18 is a subset of UD60x18. function intoUD60x18(UD2x18 x) pure returns (UD60x18 result) { result = UD60x18.wrap(UD2x18.unwrap(x)); } /// @notice Casts a UD2x18 number into uint128. /// @dev There is no overflow check because the domain of UD2x18 is a subset of uint128. function intoUint128(UD2x18 x) pure returns (uint128 result) { result = uint128(UD2x18.unwrap(x)); } /// @notice Casts a UD2x18 number into uint256. /// @dev There is no overflow check because the domain of UD2x18 is a subset of uint256. function intoUint256(UD2x18 x) pure returns (uint256 result) { result = uint256(UD2x18.unwrap(x)); } /// @notice Casts a UD2x18 number into uint40. /// @dev Requirements: /// - x must be less than or equal to `MAX_UINT40`. function intoUint40(UD2x18 x) pure returns (uint40 result) { uint64 xUint = UD2x18.unwrap(x); if (xUint > uint64(Common.MAX_UINT40)) { revert Errors.PRBMath_UD2x18_IntoUint40_Overflow(x); } result = uint40(xUint); } /// @notice Alias for {wrap}. function ud2x18(uint64 x) pure returns (UD2x18 result) { result = UD2x18.wrap(x); } /// @notice Unwrap a UD2x18 number into uint64. function unwrap(UD2x18 x) pure returns (uint64 result) { result = UD2x18.unwrap(x); } /// @notice Wraps a uint64 number into UD2x18. function wrap(uint64 x) pure returns (UD2x18 result) { result = UD2x18.wrap(x); }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.19; import { UD2x18 } from "./ValueType.sol"; /// @dev Euler's number as a UD2x18 number. UD2x18 constant E = UD2x18.wrap(2_718281828459045235); /// @dev The maximum value a UD2x18 number can have. uint64 constant uMAX_UD2x18 = 18_446744073709551615; UD2x18 constant MAX_UD2x18 = UD2x18.wrap(uMAX_UD2x18); /// @dev PI as a UD2x18 number. UD2x18 constant PI = UD2x18.wrap(3_141592653589793238); /// @dev The unit number, which gives the decimal precision of UD2x18. uint256 constant uUNIT = 1e18; UD2x18 constant UNIT = UD2x18.wrap(1e18);
// SPDX-License-Identifier: MIT pragma solidity >=0.8.19; import { UD2x18 } from "./ValueType.sol"; /// @notice Thrown when trying to cast a UD2x18 number that doesn't fit in SD1x18. error PRBMath_UD2x18_IntoSD1x18_Overflow(UD2x18 x); /// @notice Thrown when trying to cast a UD2x18 number that doesn't fit in uint40. error PRBMath_UD2x18_IntoUint40_Overflow(UD2x18 x);
// SPDX-License-Identifier: MIT pragma solidity >=0.8.19; import "./Casting.sol" as Casting; /// @notice The unsigned 2.18-decimal fixed-point number representation, which can have up to 2 digits and up to 18 /// decimals. The values of this are bound by the minimum and the maximum values permitted by the underlying Solidity /// type uint64. This is useful when end users want to use uint64 to save gas, e.g. with tight variable packing in contract /// storage. type UD2x18 is uint64; /*////////////////////////////////////////////////////////////////////////// CASTING //////////////////////////////////////////////////////////////////////////*/ using { Casting.intoSD1x18, Casting.intoSD59x18, Casting.intoUD60x18, Casting.intoUint256, Casting.intoUint128, Casting.intoUint40, Casting.unwrap } for UD2x18 global;
// SPDX-License-Identifier: MIT pragma solidity >=0.8.19; import "./Errors.sol" as CastingErrors; import { MAX_UINT128, MAX_UINT40 } from "../Common.sol"; import { uMAX_SD1x18 } from "../sd1x18/Constants.sol"; import { SD1x18 } from "../sd1x18/ValueType.sol"; import { uMAX_SD59x18 } from "../sd59x18/Constants.sol"; import { SD59x18 } from "../sd59x18/ValueType.sol"; import { uMAX_UD2x18 } from "../ud2x18/Constants.sol"; import { UD2x18 } from "../ud2x18/ValueType.sol"; import { UD60x18 } from "./ValueType.sol"; /// @notice Casts a UD60x18 number into SD1x18. /// @dev Requirements: /// - x must be less than or equal to `uMAX_SD1x18`. function intoSD1x18(UD60x18 x) pure returns (SD1x18 result) { uint256 xUint = UD60x18.unwrap(x); if (xUint > uint256(int256(uMAX_SD1x18))) { revert CastingErrors.PRBMath_UD60x18_IntoSD1x18_Overflow(x); } result = SD1x18.wrap(int64(uint64(xUint))); } /// @notice Casts a UD60x18 number into UD2x18. /// @dev Requirements: /// - x must be less than or equal to `uMAX_UD2x18`. function intoUD2x18(UD60x18 x) pure returns (UD2x18 result) { uint256 xUint = UD60x18.unwrap(x); if (xUint > uMAX_UD2x18) { revert CastingErrors.PRBMath_UD60x18_IntoUD2x18_Overflow(x); } result = UD2x18.wrap(uint64(xUint)); } /// @notice Casts a UD60x18 number into SD59x18. /// @dev Requirements: /// - x must be less than or equal to `uMAX_SD59x18`. function intoSD59x18(UD60x18 x) pure returns (SD59x18 result) { uint256 xUint = UD60x18.unwrap(x); if (xUint > uint256(uMAX_SD59x18)) { revert CastingErrors.PRBMath_UD60x18_IntoSD59x18_Overflow(x); } result = SD59x18.wrap(int256(xUint)); } /// @notice Casts a UD60x18 number into uint128. /// @dev This is basically an alias for {unwrap}. function intoUint256(UD60x18 x) pure returns (uint256 result) { result = UD60x18.unwrap(x); } /// @notice Casts a UD60x18 number into uint128. /// @dev Requirements: /// - x must be less than or equal to `MAX_UINT128`. function intoUint128(UD60x18 x) pure returns (uint128 result) { uint256 xUint = UD60x18.unwrap(x); if (xUint > MAX_UINT128) { revert CastingErrors.PRBMath_UD60x18_IntoUint128_Overflow(x); } result = uint128(xUint); } /// @notice Casts a UD60x18 number into uint40. /// @dev Requirements: /// - x must be less than or equal to `MAX_UINT40`. function intoUint40(UD60x18 x) pure returns (uint40 result) { uint256 xUint = UD60x18.unwrap(x); if (xUint > MAX_UINT40) { revert CastingErrors.PRBMath_UD60x18_IntoUint40_Overflow(x); } result = uint40(xUint); } /// @notice Alias for {wrap}. function ud(uint256 x) pure returns (UD60x18 result) { result = UD60x18.wrap(x); } /// @notice Alias for {wrap}. function ud60x18(uint256 x) pure returns (UD60x18 result) { result = UD60x18.wrap(x); } /// @notice Unwraps a UD60x18 number into uint256. function unwrap(UD60x18 x) pure returns (uint256 result) { result = UD60x18.unwrap(x); } /// @notice Wraps a uint256 number into the UD60x18 value type. function wrap(uint256 x) pure returns (UD60x18 result) { result = UD60x18.wrap(x); }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.19; import { UD60x18 } from "./ValueType.sol"; // NOTICE: the "u" prefix stands for "unwrapped". /// @dev Euler's number as a UD60x18 number. UD60x18 constant E = UD60x18.wrap(2_718281828459045235); /// @dev The maximum input permitted in {exp}. uint256 constant uEXP_MAX_INPUT = 133_084258667509499440; UD60x18 constant EXP_MAX_INPUT = UD60x18.wrap(uEXP_MAX_INPUT); /// @dev The maximum input permitted in {exp2}. uint256 constant uEXP2_MAX_INPUT = 192e18 - 1; UD60x18 constant EXP2_MAX_INPUT = UD60x18.wrap(uEXP2_MAX_INPUT); /// @dev Half the UNIT number. uint256 constant uHALF_UNIT = 0.5e18; UD60x18 constant HALF_UNIT = UD60x18.wrap(uHALF_UNIT); /// @dev $log_2(10)$ as a UD60x18 number. uint256 constant uLOG2_10 = 3_321928094887362347; UD60x18 constant LOG2_10 = UD60x18.wrap(uLOG2_10); /// @dev $log_2(e)$ as a UD60x18 number. uint256 constant uLOG2_E = 1_442695040888963407; UD60x18 constant LOG2_E = UD60x18.wrap(uLOG2_E); /// @dev The maximum value a UD60x18 number can have. uint256 constant uMAX_UD60x18 = 115792089237316195423570985008687907853269984665640564039457_584007913129639935; UD60x18 constant MAX_UD60x18 = UD60x18.wrap(uMAX_UD60x18); /// @dev The maximum whole value a UD60x18 number can have. uint256 constant uMAX_WHOLE_UD60x18 = 115792089237316195423570985008687907853269984665640564039457_000000000000000000; UD60x18 constant MAX_WHOLE_UD60x18 = UD60x18.wrap(uMAX_WHOLE_UD60x18); /// @dev PI as a UD60x18 number. UD60x18 constant PI = UD60x18.wrap(3_141592653589793238); /// @dev The unit number, which gives the decimal precision of UD60x18. uint256 constant uUNIT = 1e18; UD60x18 constant UNIT = UD60x18.wrap(uUNIT); /// @dev The unit number squared. uint256 constant uUNIT_SQUARED = 1e36; UD60x18 constant UNIT_SQUARED = UD60x18.wrap(uUNIT_SQUARED); /// @dev Zero as a UD60x18 number. UD60x18 constant ZERO = UD60x18.wrap(0);
// SPDX-License-Identifier: MIT pragma solidity >=0.8.19; import { uMAX_UD60x18, uUNIT } from "./Constants.sol"; import { PRBMath_UD60x18_Convert_Overflow } from "./Errors.sol"; import { UD60x18 } from "./ValueType.sol"; /// @notice Converts a UD60x18 number to a simple integer by dividing it by `UNIT`. /// @dev The result is rounded toward zero. /// @param x The UD60x18 number to convert. /// @return result The same number in basic integer form. function convert(UD60x18 x) pure returns (uint256 result) { result = UD60x18.unwrap(x) / uUNIT; } /// @notice Converts a simple integer to UD60x18 by multiplying it by `UNIT`. /// /// @dev Requirements: /// - x must be less than or equal to `MAX_UD60x18 / UNIT`. /// /// @param x The basic integer to convert. /// @param result The same number converted to UD60x18. function convert(uint256 x) pure returns (UD60x18 result) { if (x > uMAX_UD60x18 / uUNIT) { revert PRBMath_UD60x18_Convert_Overflow(x); } unchecked { result = UD60x18.wrap(x * uUNIT); } }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.19; import { UD60x18 } from "./ValueType.sol"; /// @notice Thrown when ceiling a number overflows UD60x18. error PRBMath_UD60x18_Ceil_Overflow(UD60x18 x); /// @notice Thrown when converting a basic integer to the fixed-point format overflows UD60x18. error PRBMath_UD60x18_Convert_Overflow(uint256 x); /// @notice Thrown when taking the natural exponent of a base greater than 133_084258667509499441. error PRBMath_UD60x18_Exp_InputTooBig(UD60x18 x); /// @notice Thrown when taking the binary exponent of a base greater than 192e18. error PRBMath_UD60x18_Exp2_InputTooBig(UD60x18 x); /// @notice Thrown when taking the geometric mean of two numbers and multiplying them overflows UD60x18. error PRBMath_UD60x18_Gm_Overflow(UD60x18 x, UD60x18 y); /// @notice Thrown when trying to cast a UD60x18 number that doesn't fit in SD1x18. error PRBMath_UD60x18_IntoSD1x18_Overflow(UD60x18 x); /// @notice Thrown when trying to cast a UD60x18 number that doesn't fit in SD59x18. error PRBMath_UD60x18_IntoSD59x18_Overflow(UD60x18 x); /// @notice Thrown when trying to cast a UD60x18 number that doesn't fit in UD2x18. error PRBMath_UD60x18_IntoUD2x18_Overflow(UD60x18 x); /// @notice Thrown when trying to cast a UD60x18 number that doesn't fit in uint128. error PRBMath_UD60x18_IntoUint128_Overflow(UD60x18 x); /// @notice Thrown when trying to cast a UD60x18 number that doesn't fit in uint40. error PRBMath_UD60x18_IntoUint40_Overflow(UD60x18 x); /// @notice Thrown when taking the logarithm of a number less than 1. error PRBMath_UD60x18_Log_InputTooSmall(UD60x18 x); /// @notice Thrown when calculating the square root overflows UD60x18. error PRBMath_UD60x18_Sqrt_Overflow(UD60x18 x);
// SPDX-License-Identifier: MIT pragma solidity >=0.8.19; import { wrap } from "./Casting.sol"; import { UD60x18 } from "./ValueType.sol"; /// @notice Implements the checked addition operation (+) in the UD60x18 type. function add(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) { result = wrap(x.unwrap() + y.unwrap()); } /// @notice Implements the AND (&) bitwise operation in the UD60x18 type. function and(UD60x18 x, uint256 bits) pure returns (UD60x18 result) { result = wrap(x.unwrap() & bits); } /// @notice Implements the AND (&) bitwise operation in the UD60x18 type. function and2(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) { result = wrap(x.unwrap() & y.unwrap()); } /// @notice Implements the equal operation (==) in the UD60x18 type. function eq(UD60x18 x, UD60x18 y) pure returns (bool result) { result = x.unwrap() == y.unwrap(); } /// @notice Implements the greater than operation (>) in the UD60x18 type. function gt(UD60x18 x, UD60x18 y) pure returns (bool result) { result = x.unwrap() > y.unwrap(); } /// @notice Implements the greater than or equal to operation (>=) in the UD60x18 type. function gte(UD60x18 x, UD60x18 y) pure returns (bool result) { result = x.unwrap() >= y.unwrap(); } /// @notice Implements a zero comparison check function in the UD60x18 type. function isZero(UD60x18 x) pure returns (bool result) { // This wouldn't work if x could be negative. result = x.unwrap() == 0; } /// @notice Implements the left shift operation (<<) in the UD60x18 type. function lshift(UD60x18 x, uint256 bits) pure returns (UD60x18 result) { result = wrap(x.unwrap() << bits); } /// @notice Implements the lower than operation (<) in the UD60x18 type. function lt(UD60x18 x, UD60x18 y) pure returns (bool result) { result = x.unwrap() < y.unwrap(); } /// @notice Implements the lower than or equal to operation (<=) in the UD60x18 type. function lte(UD60x18 x, UD60x18 y) pure returns (bool result) { result = x.unwrap() <= y.unwrap(); } /// @notice Implements the checked modulo operation (%) in the UD60x18 type. function mod(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) { result = wrap(x.unwrap() % y.unwrap()); } /// @notice Implements the not equal operation (!=) in the UD60x18 type. function neq(UD60x18 x, UD60x18 y) pure returns (bool result) { result = x.unwrap() != y.unwrap(); } /// @notice Implements the NOT (~) bitwise operation in the UD60x18 type. function not(UD60x18 x) pure returns (UD60x18 result) { result = wrap(~x.unwrap()); } /// @notice Implements the OR (|) bitwise operation in the UD60x18 type. function or(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) { result = wrap(x.unwrap() | y.unwrap()); } /// @notice Implements the right shift operation (>>) in the UD60x18 type. function rshift(UD60x18 x, uint256 bits) pure returns (UD60x18 result) { result = wrap(x.unwrap() >> bits); } /// @notice Implements the checked subtraction operation (-) in the UD60x18 type. function sub(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) { result = wrap(x.unwrap() - y.unwrap()); } /// @notice Implements the unchecked addition operation (+) in the UD60x18 type. function uncheckedAdd(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) { unchecked { result = wrap(x.unwrap() + y.unwrap()); } } /// @notice Implements the unchecked subtraction operation (-) in the UD60x18 type. function uncheckedSub(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) { unchecked { result = wrap(x.unwrap() - y.unwrap()); } } /// @notice Implements the XOR (^) bitwise operation in the UD60x18 type. function xor(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) { result = wrap(x.unwrap() ^ y.unwrap()); }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.19; import "../Common.sol" as Common; import "./Errors.sol" as Errors; import { wrap } from "./Casting.sol"; import { uEXP_MAX_INPUT, uEXP2_MAX_INPUT, uHALF_UNIT, uLOG2_10, uLOG2_E, uMAX_UD60x18, uMAX_WHOLE_UD60x18, UNIT, uUNIT, uUNIT_SQUARED, ZERO } from "./Constants.sol"; import { UD60x18 } from "./ValueType.sol"; /*////////////////////////////////////////////////////////////////////////// MATHEMATICAL FUNCTIONS //////////////////////////////////////////////////////////////////////////*/ /// @notice Calculates the arithmetic average of x and y using the following formula: /// /// $$ /// avg(x, y) = (x & y) + ((xUint ^ yUint) / 2) /// $$ /// /// In English, this is what this formula does: /// /// 1. AND x and y. /// 2. Calculate half of XOR x and y. /// 3. Add the two results together. /// /// This technique is known as SWAR, which stands for "SIMD within a register". You can read more about it here: /// https://devblogs.microsoft.com/oldnewthing/20220207-00/?p=106223 /// /// @dev Notes: /// - The result is rounded toward zero. /// /// @param x The first operand as a UD60x18 number. /// @param y The second operand as a UD60x18 number. /// @return result The arithmetic average as a UD60x18 number. /// @custom:smtchecker abstract-function-nondet function avg(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) { uint256 xUint = x.unwrap(); uint256 yUint = y.unwrap(); unchecked { result = wrap((xUint & yUint) + ((xUint ^ yUint) >> 1)); } } /// @notice Yields the smallest whole number greater than or equal to x. /// /// @dev This is optimized for fractional value inputs, because for every whole value there are (1e18 - 1) fractional /// counterparts. See https://en.wikipedia.org/wiki/Floor_and_ceiling_functions. /// /// Requirements: /// - x must be less than or equal to `MAX_WHOLE_UD60x18`. /// /// @param x The UD60x18 number to ceil. /// @param result The smallest whole number greater than or equal to x, as a UD60x18 number. /// @custom:smtchecker abstract-function-nondet function ceil(UD60x18 x) pure returns (UD60x18 result) { uint256 xUint = x.unwrap(); if (xUint > uMAX_WHOLE_UD60x18) { revert Errors.PRBMath_UD60x18_Ceil_Overflow(x); } assembly ("memory-safe") { // Equivalent to `x % UNIT`. let remainder := mod(x, uUNIT) // Equivalent to `UNIT - remainder`. let delta := sub(uUNIT, remainder) // Equivalent to `x + remainder > 0 ? delta : 0`. result := add(x, mul(delta, gt(remainder, 0))) } } /// @notice Divides two UD60x18 numbers, returning a new UD60x18 number. /// /// @dev Uses {Common.mulDiv} to enable overflow-safe multiplication and division. /// /// Notes: /// - Refer to the notes in {Common.mulDiv}. /// /// Requirements: /// - Refer to the requirements in {Common.mulDiv}. /// /// @param x The numerator as a UD60x18 number. /// @param y The denominator as a UD60x18 number. /// @param result The quotient as a UD60x18 number. /// @custom:smtchecker abstract-function-nondet function div(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) { result = wrap(Common.mulDiv(x.unwrap(), uUNIT, y.unwrap())); } /// @notice Calculates the natural exponent of x using the following formula: /// /// $$ /// e^x = 2^{x * log_2{e}} /// $$ /// /// @dev Requirements: /// - x must be less than 133_084258667509499441. /// /// @param x The exponent as a UD60x18 number. /// @return result The result as a UD60x18 number. /// @custom:smtchecker abstract-function-nondet function exp(UD60x18 x) pure returns (UD60x18 result) { uint256 xUint = x.unwrap(); // This check prevents values greater than 192e18 from being passed to {exp2}. if (xUint > uEXP_MAX_INPUT) { revert Errors.PRBMath_UD60x18_Exp_InputTooBig(x); } unchecked { // Inline the fixed-point multiplication to save gas. uint256 doubleUnitProduct = xUint * uLOG2_E; result = exp2(wrap(doubleUnitProduct / uUNIT)); } } /// @notice Calculates the binary exponent of x using the binary fraction method. /// /// @dev See https://ethereum.stackexchange.com/q/79903/24693 /// /// Requirements: /// - x must be less than 192e18. /// - The result must fit in UD60x18. /// /// @param x The exponent as a UD60x18 number. /// @return result The result as a UD60x18 number. /// @custom:smtchecker abstract-function-nondet function exp2(UD60x18 x) pure returns (UD60x18 result) { uint256 xUint = x.unwrap(); // Numbers greater than or equal to 192e18 don't fit in the 192.64-bit format. if (xUint > uEXP2_MAX_INPUT) { revert Errors.PRBMath_UD60x18_Exp2_InputTooBig(x); } // Convert x to the 192.64-bit fixed-point format. uint256 x_192x64 = (xUint << 64) / uUNIT; // Pass x to the {Common.exp2} function, which uses the 192.64-bit fixed-point number representation. result = wrap(Common.exp2(x_192x64)); } /// @notice Yields the greatest whole number less than or equal to x. /// @dev Optimized for fractional value inputs, because every whole value has (1e18 - 1) fractional counterparts. /// See https://en.wikipedia.org/wiki/Floor_and_ceiling_functions. /// @param x The UD60x18 number to floor. /// @param result The greatest whole number less than or equal to x, as a UD60x18 number. /// @custom:smtchecker abstract-function-nondet function floor(UD60x18 x) pure returns (UD60x18 result) { assembly ("memory-safe") { // Equivalent to `x % UNIT`. let remainder := mod(x, uUNIT) // Equivalent to `x - remainder > 0 ? remainder : 0)`. result := sub(x, mul(remainder, gt(remainder, 0))) } } /// @notice Yields the excess beyond the floor of x using the odd function definition. /// @dev See https://en.wikipedia.org/wiki/Fractional_part. /// @param x The UD60x18 number to get the fractional part of. /// @param result The fractional part of x as a UD60x18 number. /// @custom:smtchecker abstract-function-nondet function frac(UD60x18 x) pure returns (UD60x18 result) { assembly ("memory-safe") { result := mod(x, uUNIT) } } /// @notice Calculates the geometric mean of x and y, i.e. $\sqrt{x * y}$, rounding down. /// /// @dev Requirements: /// - x * y must fit in UD60x18. /// /// @param x The first operand as a UD60x18 number. /// @param y The second operand as a UD60x18 number. /// @return result The result as a UD60x18 number. /// @custom:smtchecker abstract-function-nondet function gm(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) { uint256 xUint = x.unwrap(); uint256 yUint = y.unwrap(); if (xUint == 0 || yUint == 0) { return ZERO; } unchecked { // Checking for overflow this way is faster than letting Solidity do it. uint256 xyUint = xUint * yUint; if (xyUint / xUint != yUint) { revert Errors.PRBMath_UD60x18_Gm_Overflow(x, y); } // We don't need to multiply the result by `UNIT` here because the x*y product picked up a factor of `UNIT` // during multiplication. See the comments in {Common.sqrt}. result = wrap(Common.sqrt(xyUint)); } } /// @notice Calculates the inverse of x. /// /// @dev Notes: /// - The result is rounded toward zero. /// /// Requirements: /// - x must not be zero. /// /// @param x The UD60x18 number for which to calculate the inverse. /// @return result The inverse as a UD60x18 number. /// @custom:smtchecker abstract-function-nondet function inv(UD60x18 x) pure returns (UD60x18 result) { unchecked { result = wrap(uUNIT_SQUARED / x.unwrap()); } } /// @notice Calculates the natural logarithm of x using the following formula: /// /// $$ /// ln{x} = log_2{x} / log_2{e} /// $$ /// /// @dev Notes: /// - Refer to the notes in {log2}. /// - The precision isn't sufficiently fine-grained to return exactly `UNIT` when the input is `E`. /// /// Requirements: /// - Refer to the requirements in {log2}. /// /// @param x The UD60x18 number for which to calculate the natural logarithm. /// @return result The natural logarithm as a UD60x18 number. /// @custom:smtchecker abstract-function-nondet function ln(UD60x18 x) pure returns (UD60x18 result) { unchecked { // Inline the fixed-point multiplication to save gas. This is overflow-safe because the maximum value that // {log2} can return is ~196_205294292027477728. result = wrap(log2(x).unwrap() * uUNIT / uLOG2_E); } } /// @notice Calculates the common logarithm of x using the following formula: /// /// $$ /// log_{10}{x} = log_2{x} / log_2{10} /// $$ /// /// However, if x is an exact power of ten, a hard coded value is returned. /// /// @dev Notes: /// - Refer to the notes in {log2}. /// /// Requirements: /// - Refer to the requirements in {log2}. /// /// @param x The UD60x18 number for which to calculate the common logarithm. /// @return result The common logarithm as a UD60x18 number. /// @custom:smtchecker abstract-function-nondet function log10(UD60x18 x) pure returns (UD60x18 result) { uint256 xUint = x.unwrap(); if (xUint < uUNIT) { revert Errors.PRBMath_UD60x18_Log_InputTooSmall(x); } // Note that the `mul` in this assembly block is the standard multiplication operation, not {UD60x18.mul}. // prettier-ignore assembly ("memory-safe") { switch x case 1 { result := mul(uUNIT, sub(0, 18)) } case 10 { result := mul(uUNIT, sub(1, 18)) } case 100 { result := mul(uUNIT, sub(2, 18)) } case 1000 { result := mul(uUNIT, sub(3, 18)) } case 10000 { result := mul(uUNIT, sub(4, 18)) } case 100000 { result := mul(uUNIT, sub(5, 18)) } case 1000000 { result := mul(uUNIT, sub(6, 18)) } case 10000000 { result := mul(uUNIT, sub(7, 18)) } case 100000000 { result := mul(uUNIT, sub(8, 18)) } case 1000000000 { result := mul(uUNIT, sub(9, 18)) } case 10000000000 { result := mul(uUNIT, sub(10, 18)) } case 100000000000 { result := mul(uUNIT, sub(11, 18)) } case 1000000000000 { result := mul(uUNIT, sub(12, 18)) } case 10000000000000 { result := mul(uUNIT, sub(13, 18)) } case 100000000000000 { result := mul(uUNIT, sub(14, 18)) } case 1000000000000000 { result := mul(uUNIT, sub(15, 18)) } case 10000000000000000 { result := mul(uUNIT, sub(16, 18)) } case 100000000000000000 { result := mul(uUNIT, sub(17, 18)) } case 1000000000000000000 { result := 0 } case 10000000000000000000 { result := uUNIT } case 100000000000000000000 { result := mul(uUNIT, 2) } case 1000000000000000000000 { result := mul(uUNIT, 3) } case 10000000000000000000000 { result := mul(uUNIT, 4) } case 100000000000000000000000 { result := mul(uUNIT, 5) } case 1000000000000000000000000 { result := mul(uUNIT, 6) } case 10000000000000000000000000 { result := mul(uUNIT, 7) } case 100000000000000000000000000 { result := mul(uUNIT, 8) } case 1000000000000000000000000000 { result := mul(uUNIT, 9) } case 10000000000000000000000000000 { result := mul(uUNIT, 10) } case 100000000000000000000000000000 { result := mul(uUNIT, 11) } case 1000000000000000000000000000000 { result := mul(uUNIT, 12) } case 10000000000000000000000000000000 { result := mul(uUNIT, 13) } case 100000000000000000000000000000000 { result := mul(uUNIT, 14) } case 1000000000000000000000000000000000 { result := mul(uUNIT, 15) } case 10000000000000000000000000000000000 { result := mul(uUNIT, 16) } case 100000000000000000000000000000000000 { result := mul(uUNIT, 17) } case 1000000000000000000000000000000000000 { result := mul(uUNIT, 18) } case 10000000000000000000000000000000000000 { result := mul(uUNIT, 19) } case 100000000000000000000000000000000000000 { result := mul(uUNIT, 20) } case 1000000000000000000000000000000000000000 { result := mul(uUNIT, 21) } case 10000000000000000000000000000000000000000 { result := mul(uUNIT, 22) } case 100000000000000000000000000000000000000000 { result := mul(uUNIT, 23) } case 1000000000000000000000000000000000000000000 { result := mul(uUNIT, 24) } case 10000000000000000000000000000000000000000000 { result := mul(uUNIT, 25) } case 100000000000000000000000000000000000000000000 { result := mul(uUNIT, 26) } case 1000000000000000000000000000000000000000000000 { result := mul(uUNIT, 27) } case 10000000000000000000000000000000000000000000000 { result := mul(uUNIT, 28) } case 100000000000000000000000000000000000000000000000 { result := mul(uUNIT, 29) } case 1000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 30) } case 10000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 31) } case 100000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 32) } case 1000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 33) } case 10000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 34) } case 100000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 35) } case 1000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 36) } case 10000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 37) } case 100000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 38) } case 1000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 39) } case 10000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 40) } case 100000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 41) } case 1000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 42) } case 10000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 43) } case 100000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 44) } case 1000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 45) } case 10000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 46) } case 100000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 47) } case 1000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 48) } case 10000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 49) } case 100000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 50) } case 1000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 51) } case 10000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 52) } case 100000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 53) } case 1000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 54) } case 10000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 55) } case 100000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 56) } case 1000000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 57) } case 10000000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 58) } case 100000000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 59) } default { result := uMAX_UD60x18 } } if (result.unwrap() == uMAX_UD60x18) { unchecked { // Inline the fixed-point division to save gas. result = wrap(log2(x).unwrap() * uUNIT / uLOG2_10); } } } /// @notice Calculates the binary logarithm of x using the iterative approximation algorithm: /// /// $$ /// log_2{x} = n + log_2{y}, \text{ where } y = x*2^{-n}, \ y \in [1, 2) /// $$ /// /// For $0 \leq x \lt 1$, the input is inverted: /// /// $$ /// log_2{x} = -log_2{\frac{1}{x}} /// $$ /// /// @dev See https://en.wikipedia.org/wiki/Binary_logarithm#Iterative_approximation /// /// Notes: /// - Due to the lossy precision of the iterative approximation, the results are not perfectly accurate to the last decimal. /// /// Requirements: /// - x must be greater than zero. /// /// @param x The UD60x18 number for which to calculate the binary logarithm. /// @return result The binary logarithm as a UD60x18 number. /// @custom:smtchecker abstract-function-nondet function log2(UD60x18 x) pure returns (UD60x18 result) { uint256 xUint = x.unwrap(); if (xUint < uUNIT) { revert Errors.PRBMath_UD60x18_Log_InputTooSmall(x); } unchecked { // Calculate the integer part of the logarithm. uint256 n = Common.msb(xUint / uUNIT); // This is the integer part of the logarithm as a UD60x18 number. The operation can't overflow because n // n is at most 255 and UNIT is 1e18. uint256 resultUint = n * uUNIT; // Calculate $y = x * 2^{-n}$. uint256 y = xUint >> n; // If y is the unit number, the fractional part is zero. if (y == uUNIT) { return wrap(resultUint); } // Calculate the fractional part via the iterative approximation. // The `delta >>= 1` part is equivalent to `delta /= 2`, but shifting bits is more gas efficient. uint256 DOUBLE_UNIT = 2e18; for (uint256 delta = uHALF_UNIT; delta > 0; delta >>= 1) { y = (y * y) / uUNIT; // Is y^2 >= 2e18 and so in the range [2e18, 4e18)? if (y >= DOUBLE_UNIT) { // Add the 2^{-m} factor to the logarithm. resultUint += delta; // Halve y, which corresponds to z/2 in the Wikipedia article. y >>= 1; } } result = wrap(resultUint); } } /// @notice Multiplies two UD60x18 numbers together, returning a new UD60x18 number. /// /// @dev Uses {Common.mulDiv} to enable overflow-safe multiplication and division. /// /// Notes: /// - Refer to the notes in {Common.mulDiv}. /// /// Requirements: /// - Refer to the requirements in {Common.mulDiv}. /// /// @dev See the documentation in {Common.mulDiv18}. /// @param x The multiplicand as a UD60x18 number. /// @param y The multiplier as a UD60x18 number. /// @return result The product as a UD60x18 number. /// @custom:smtchecker abstract-function-nondet function mul(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) { result = wrap(Common.mulDiv18(x.unwrap(), y.unwrap())); } /// @notice Raises x to the power of y. /// /// For $1 \leq x \leq \infty$, the following standard formula is used: /// /// $$ /// x^y = 2^{log_2{x} * y} /// $$ /// /// For $0 \leq x \lt 1$, since the unsigned {log2} is undefined, an equivalent formula is used: /// /// $$ /// i = \frac{1}{x} /// w = 2^{log_2{i} * y} /// x^y = \frac{1}{w} /// $$ /// /// @dev Notes: /// - Refer to the notes in {log2} and {mul}. /// - Returns `UNIT` for 0^0. /// - It may not perform well with very small values of x. Consider using SD59x18 as an alternative. /// /// Requirements: /// - Refer to the requirements in {exp2}, {log2}, and {mul}. /// /// @param x The base as a UD60x18 number. /// @param y The exponent as a UD60x18 number. /// @return result The result as a UD60x18 number. /// @custom:smtchecker abstract-function-nondet function pow(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) { uint256 xUint = x.unwrap(); uint256 yUint = y.unwrap(); // If both x and y are zero, the result is `UNIT`. If just x is zero, the result is always zero. if (xUint == 0) { return yUint == 0 ? UNIT : ZERO; } // If x is `UNIT`, the result is always `UNIT`. else if (xUint == uUNIT) { return UNIT; } // If y is zero, the result is always `UNIT`. if (yUint == 0) { return UNIT; } // If y is `UNIT`, the result is always x. else if (yUint == uUNIT) { return x; } // If x is greater than `UNIT`, use the standard formula. if (xUint > uUNIT) { result = exp2(mul(log2(x), y)); } // Conversely, if x is less than `UNIT`, use the equivalent formula. else { UD60x18 i = wrap(uUNIT_SQUARED / xUint); UD60x18 w = exp2(mul(log2(i), y)); result = wrap(uUNIT_SQUARED / w.unwrap()); } } /// @notice Raises x (a UD60x18 number) to the power y (an unsigned basic integer) using the well-known /// algorithm "exponentiation by squaring". /// /// @dev See https://en.wikipedia.org/wiki/Exponentiation_by_squaring. /// /// Notes: /// - Refer to the notes in {Common.mulDiv18}. /// - Returns `UNIT` for 0^0. /// /// Requirements: /// - The result must fit in UD60x18. /// /// @param x The base as a UD60x18 number. /// @param y The exponent as a uint256. /// @return result The result as a UD60x18 number. /// @custom:smtchecker abstract-function-nondet function powu(UD60x18 x, uint256 y) pure returns (UD60x18 result) { // Calculate the first iteration of the loop in advance. uint256 xUint = x.unwrap(); uint256 resultUint = y & 1 > 0 ? xUint : uUNIT; // Equivalent to `for(y /= 2; y > 0; y /= 2)`. for (y >>= 1; y > 0; y >>= 1) { xUint = Common.mulDiv18(xUint, xUint); // Equivalent to `y % 2 == 1`. if (y & 1 > 0) { resultUint = Common.mulDiv18(resultUint, xUint); } } result = wrap(resultUint); } /// @notice Calculates the square root of x using the Babylonian method. /// /// @dev See https://en.wikipedia.org/wiki/Methods_of_computing_square_roots#Babylonian_method. /// /// Notes: /// - The result is rounded toward zero. /// /// Requirements: /// - x must be less than `MAX_UD60x18 / UNIT`. /// /// @param x The UD60x18 number for which to calculate the square root. /// @return result The result as a UD60x18 number. /// @custom:smtchecker abstract-function-nondet function sqrt(UD60x18 x) pure returns (UD60x18 result) { uint256 xUint = x.unwrap(); unchecked { if (xUint > uMAX_UD60x18 / uUNIT) { revert Errors.PRBMath_UD60x18_Sqrt_Overflow(x); } // Multiply x by `UNIT` to account for the factor of `UNIT` picked up when multiplying two UD60x18 numbers. // In this case, the two numbers are both the square root. result = wrap(Common.sqrt(xUint * uUNIT)); } }
// SPDX-License-Identifier: MIT pragma solidity >=0.8.19; import "./Casting.sol" as Casting; import "./Helpers.sol" as Helpers; import "./Math.sol" as Math; /// @notice The unsigned 60.18-decimal fixed-point number representation, which can have up to 60 digits and up to 18 /// decimals. The values of this are bound by the minimum and the maximum values permitted by the Solidity type uint256. /// @dev The value type is defined here so it can be imported in all other files. type UD60x18 is uint256; /*////////////////////////////////////////////////////////////////////////// CASTING //////////////////////////////////////////////////////////////////////////*/ using { Casting.intoSD1x18, Casting.intoUD2x18, Casting.intoSD59x18, Casting.intoUint128, Casting.intoUint256, Casting.intoUint40, Casting.unwrap } for UD60x18 global; /*////////////////////////////////////////////////////////////////////////// MATHEMATICAL FUNCTIONS //////////////////////////////////////////////////////////////////////////*/ // The global "using for" directive makes the functions in this library callable on the UD60x18 type. using { Math.avg, Math.ceil, Math.div, Math.exp, Math.exp2, Math.floor, Math.frac, Math.gm, Math.inv, Math.ln, Math.log10, Math.log2, Math.mul, Math.pow, Math.powu, Math.sqrt } for UD60x18 global; /*////////////////////////////////////////////////////////////////////////// HELPER FUNCTIONS //////////////////////////////////////////////////////////////////////////*/ // The global "using for" directive makes the functions in this library callable on the UD60x18 type. using { Helpers.add, Helpers.and, Helpers.eq, Helpers.gt, Helpers.gte, Helpers.isZero, Helpers.lshift, Helpers.lt, Helpers.lte, Helpers.mod, Helpers.neq, Helpers.not, Helpers.or, Helpers.rshift, Helpers.sub, Helpers.uncheckedAdd, Helpers.uncheckedSub, Helpers.xor } for UD60x18 global; /*////////////////////////////////////////////////////////////////////////// OPERATORS //////////////////////////////////////////////////////////////////////////*/ // The global "using for" directive makes it possible to use these operators on the UD60x18 type. using { Helpers.add as +, Helpers.and2 as &, Math.div as /, Helpers.eq as ==, Helpers.gt as >, Helpers.gte as >=, Helpers.lt as <, Helpers.lte as <=, Helpers.or as |, Helpers.mod as %, Math.mul as *, Helpers.neq as !=, Helpers.not as ~, Helpers.sub as -, Helpers.xor as ^ } for UD60x18 global;
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.24; import { Pausable } from "@openzeppelin/contracts/utils/Pausable.sol"; import "@openzeppelin/contracts/utils/Context.sol"; import { SafeERC20, IERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import { Initializable } from "@openzeppelin/contracts/proxy/utils/Initializable.sol"; import { EnumerableSet } from "@openzeppelin/contracts/utils/structs/EnumerableSet.sol"; import { IAccount } from "../interfaces/IAccount.sol"; import { IAccountManager } from "../interfaces/IAccountManager.sol"; import { UD60x18, ud, UNIT, ZERO } from "@prb/math/src/UD60x18.sol"; import { AccountLib } from "../libraries/accounts/AccountLib.sol"; import "../libraries/traits/AddressCheckerTrait.sol"; import { Address } from "@openzeppelin/contracts/utils/Address.sol"; import "../interfaces/ILendingPool.sol"; import "../libraries/Errors.sol"; import "../periphery/Multicall.sol"; /// @title Base Account /// @notice The Base Account contract is the parent contract for all investment accounts /// @dev ERC2771Context is initialized with a null address because we override the isTrustedForwarder method to use the /// Account Manager as the trustedForwarder. abstract contract BaseAccount is Multicall, IAccount, AddressCheckerTrait, Initializable, Pausable { using SafeERC20 for IERC20; ///////////////////////////// // Omega Protocol Contracts ///////////////////////////// /// @dev Accounts use the other contracts in the protocol for various functions /// /// AccountManager - Referrences this contract for access control purposes /// LendingPool - Accesses this contract to borrow and repay as well as to /// Read the debt and collateral amounts. /// offchain liquidations. /// @notice The Investment Account Manager IAccountManager internal _manager; /// @notice The asset used by this investment account IERC20 public asset; ///////////////////////////// // State Variables ///////////////////////////// /// @notice The owner of this account address public owner; /// @notice Empty constructor because this contract is deployed as a clone in the manager constructor() { _disableInitializers(); } /// @notice Initialize this investment account /// @param owner_ The borrower that owns this account function initialize(address owner_) external virtual initializer { _initialize(owner_); } /// @notice Initialize this investment account /// @param owner_ The borrower that owns this account function _initialize(address owner_) internal { _manager = IAccountManager(msg.sender); asset = _manager.getLendAsset(); owner = owner_; // Approve repayments to the lending pool asset.safeIncreaseAllowance(_manager.lendingPool(), type(uint256).max); // Approve manager to transfer assets asset.safeIncreaseAllowance(address(_manager), type(uint256).max); } //////////////////////////// // Access Control Modifiers //////////////////////////// /// @notice Restricts access to the `manager` of the account modifier onlyAccountManager() { if (_msgSender() != address(_manager)) revert Errors.Unauthorized(); _; } /// @notice Restricts access to the `owner` of the account /// @dev We use _msgSender() to allow for meta transactions modifier onlyOwner() { if (_msgSender() != owner) revert Errors.Unauthorized(); _; } modifier onlyRepayer() { bool isLiquidationReceiver = false; try _manager.isLiquidationReceiver(_msgSender()) returns (bool _isLiquidationReceiver) { isLiquidationReceiver = _isLiquidationReceiver; } catch { isLiquidationReceiver = false; } if (_msgSender() == owner || _msgSender() == address(_manager) || isLiquidationReceiver) { _; } else { revert Errors.Unauthorized(); } } /////////////////////// // Admin Methods /////////////////////// /// @notice The owner of the accountManager is allowed to: /// - Pause/unpause the contract /// @notice Lets the admin pause the account function pause() external onlyAccountManager { _pause(); } /// @notice Lets the admin unpause the account function unpause() external onlyAccountManager { _unpause(); } function multicall(bytes[] calldata data) public payable override onlyOwner whenNotPaused returns (bytes[] memory results) { results = super.multicall(data); } ////////////////////////// // Lending Pool Methods ////////////////////////// /// @notice Interactions to borrow and repay from the `lendingPool` /// @notice Borrow from the lending pool /// @dev Manager is in charge of making sure this account is still solvent after borrowing. /// @dev Loans are assessed by looking at the account's debt and collateral. /// @param amount The amount to borrow function borrow(uint256 amount) external payable virtual onlyOwner whenNotPaused { // Borrow funds _manager.borrow(amount); emit Borrow(amount); } /// @notice Repay the lending pool /// @param amount The amount to repay function repay(uint256 amount) external payable virtual onlyRepayer { _manager.repay(address(this), amount); emit Repay(amount); } /// @notice Repay the lending pool /// @param amountFrom Additional amount to pull from owner before repayment function repayFrom(uint256 amountFrom) external payable virtual onlyOwner { asset.safeTransferFrom(_msgSender(), address(this), amountFrom); _manager.repay(address(this), asset.balanceOf(address(this))); emit Repay(amountFrom); } //////////////////// // Views //////////////////// /// @notice Returns the AccountManager that created this Account. function getManager() external view returns (IAccountManager) { return _manager; } function claim(uint256 amount) external payable onlyOwner whenNotPaused { _manager.claim(amount, _msgSender()); emit Claim(amount); } function claim(uint256 amount, address recipient) external payable onlyOwner whenNotPaused { _manager.claim(amount, recipient); emit Claim(amount); } }
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.24; import { EnumerableSet } from "@openzeppelin/contracts/utils/structs/EnumerableSet.sol"; import "./BaseAccount.sol"; import { UD60x18, ud } from "@prb/math/src/UD60x18.sol"; import "../libraries/Errors.sol"; /// @title External Account /// @notice This account type supports borrowing from the lending pool /// directly to the owners wallet. LTVs on this account type will be /// less than 100%. This account type relies on off-chain liquidations. contract ExternalAccount is BaseAccount { using SafeERC20 for IERC20; using EnumerableSet for EnumerableSet.AddressSet; /// @notice Initialize this permissionless account /// @param owner_ The borrower that owns this account function initialize(address owner_) public override initializer { _initialize(owner_); } ////////////////////////// // Lending Pool Methods ////////////////////////// /// @notice Borrow from the lending pool /// @param amount The amount to borrow function borrow(uint256 amount) external payable override onlyOwner whenNotPaused { uint256 amountBorrowed = _manager.borrow(amount); asset.safeTransfer(_msgSender(), amountBorrowed); } /// @notice Repay the lending pool /// @param amount The amount to repay function repay(uint256 amount) external payable override onlyRepayer whenNotPaused { _manager.repay(address(this), amount); } function getKind() external pure returns (bytes32) { return keccak256(abi.encode("OMEGA_EXTERNAL_ACCOUNT")); } }
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.24; import { EnumerableSet } from "@openzeppelin/contracts/utils/structs/EnumerableSet.sol"; import { IStrategyVault } from "../interfaces/IStrategyVault.sol"; import { UD60x18, ud } from "@prb/math/src/UD60x18.sol"; import { InternalAccountEvents } from "contracts/interfaces/IInternalAccount.sol"; import "./BaseAccount.sol"; import "../libraries/Errors.sol"; /// @title Internal Account /// @notice This account type is used to manage investments into approved strategies. /// The account owner can deposit and withdraw from approved strategies to earn profits. contract InternalAccount is BaseAccount, InternalAccountEvents { using SafeERC20 for IERC20; /// @notice Initialize this permissioned account /// @param owner_ The borrower that owns this account function initialize(address owner_) public virtual override initializer { _initialize(owner_); } ////////////////////////// // Investment Methods ////////////////////////// /// @notice These methods are used to manage permissioned investment into approved investment strategies /// @notice Deposit into a Omega Strategy Vault /// @dev The `minShares` can be calculated using the `previewDeposit` method on the vault /// @param strategy The address of the strategy to deposit into /// @param amount The amount to deposit in USDC /// @param data encode data for the strategy to process the deposit function strategyDeposit( address strategy, uint256 amount, bytes memory data ) external payable virtual onlyOwner whenNotPaused returns (uint256 receivedShares) { asset.safeIncreaseAllowance(strategy, amount); uint256 executionGasLimit = 0; if (strategy != address(0)) { executionGasLimit = IStrategyVault(strategy).estimateExecuteDepositGasLimit(); } uint256 executionFee = 0; if (executionGasLimit > 0) { executionFee = executionGasLimit * tx.gasprice; } receivedShares = _manager.strategyDeposit{ value: executionFee }(owner, strategy, amount, data); emit StrategyDeposit(strategy, amount); } /// @notice Withdraw from a Omega Strategy Vault /// @dev The `minUsdc` can be calculated using the `previewWithdraw` method on the vault /// @param strategy The address of the strategy to withdraw from /// @param shares The amount to withdraw in vault shares /// @param data encoded data for the strategy to process the withdrawal function strategyWithdraw( address strategy, uint256 shares, bytes memory data ) external payable onlyOwner whenNotPaused returns (uint256 receivedAssets) { receivedAssets = _strategyWithdraw(strategy, shares, data); _manager.strategyWithdrawal(owner, strategy, receivedAssets, false); } function strategyWithdrawAndRepay( address strategy, uint256 shares, bytes memory data ) external payable onlyOwner whenNotPaused returns (uint256 receivedAssets) { _manager.snapshotAccountHealthFactor(); receivedAssets = _strategyWithdraw(strategy, shares, data); _manager.repay(address(this), receivedAssets); _manager.strategyWithdrawal(owner, strategy, receivedAssets, true); } function _strategyWithdraw( address strategy, uint256 shares, bytes memory data ) internal returns (uint256 receivedAssets) { uint256 executionGasLimit = 0; if (strategy != address(0)) { executionGasLimit = IStrategyVault(strategy).estimateExecuteWithdrawalGasLimit(); } uint256 executionFee = 0; if (executionGasLimit > 0) { executionFee = executionGasLimit * tx.gasprice; } receivedAssets = IStrategyVault(strategy).withdraw{ value: executionFee }(shares, data); emit StrategyWithdraw(strategy, receivedAssets); } ////////////////////////// // View Methods ////////////////////////// /// @notice These methods are used to view information about this account function getKind() external pure virtual returns (bytes32) { return keccak256(abi.encode("OMEGA_INTERNAL_ACCOUNT")); } ////////////////////////// // Liquidator Methods ////////////////////////// function _preStrategyLiquidation(address recipient) internal view returns (uint256 amountBefore) { // Track the amount liquidate by checking the asset balance of the liquidator before and after amountBefore = asset.balanceOf(recipient); } function _postStrategyLiquidation( address strategy, address recipient, uint256 expectedReceived, uint256 amountBefore ) internal { if (asset.balanceOf(address(recipient)) < (expectedReceived + amountBefore)) { revert Errors.WithdrawnAssetsNotReceived(); } emit StrategyLiquidated(strategy, expectedReceived); } function liquidateStrategy( address strategy, address recipient, uint256 minAmount, bytes memory data ) external payable onlyAccountManager { uint256 amountBefore = _preStrategyLiquidation(recipient); uint256 receivedAssets = 0; uint256 executionGasLimit = 0; if (strategy != address(0)) { executionGasLimit = IStrategyVault(strategy).estimateExecuteWithdrawalGasLimit(); } uint256 executionFee = 0; if (executionGasLimit > 0) { executionFee = executionGasLimit * tx.gasprice; } if (strategy != address(0)) { receivedAssets = IStrategyVault(strategy).liquidate{ value: executionFee }(recipient, minAmount, data); _postStrategyLiquidation(strategy, recipient, receivedAssets, amountBefore); } } }
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.24; enum YieldMode { AUTOMATIC, VOID, CLAIMABLE } enum GasMode { VOID, CLAIMABLE } interface IBlastPoints { function configurePointsOperator(address operator) external; function configurePointsOperatorOnBehalf(address operator, address contractAddress) external; function operators(address contractAddress) external view returns (address); function readStatus(address contractAddress) external view returns (address, bool, uint256); } interface IBlast { // configure function configureContract(address contractAddress, YieldMode _yield, GasMode gasMode, address governor) external; function configure(YieldMode _yield, GasMode gasMode, address governor) external; // base configuration options function configureClaimableYield() external; function configureClaimableYieldOnBehalf(address contractAddress) external; function configureAutomaticYield() external; function configureAutomaticYieldOnBehalf(address contractAddress) external; function configureVoidYield() external; function configureVoidYieldOnBehalf(address contractAddress) external; function configureClaimableGas() external; function configureClaimableGasOnBehalf(address contractAddress) external; function configureVoidGas() external; function configureVoidGasOnBehalf(address contractAddress) external; function configureGovernor(address _governor) external; function configureGovernorOnBehalf(address _newGovernor, address contractAddress) external; // claim yield function claimYield(address contractAddress, address recipientOfYield, uint256 amount) external returns (uint256); function claimAllYield(address contractAddress, address recipientOfYield) external returns (uint256); // claim gas function claimAllGas(address contractAddress, address recipientOfGas) external returns (uint256); function claimGasAtMinClaimRate( address contractAddress, address recipientOfGas, uint256 minClaimRateBips ) external returns (uint256); function claimMaxGas(address contractAddress, address recipientOfGas) external returns (uint256); function claimGas( address contractAddress, address recipientOfGas, uint256 gasToClaim, uint256 gasSecondsToConsume ) external returns (uint256); // read functions function readClaimableYield(address contractAddress) external view returns (uint256); function readYieldConfiguration(address contractAddress) external view returns (uint8); function readGasParams(address contractAddress) external view returns (uint256 etherSeconds, uint256 etherBalance, uint256 lastUpdated, GasMode); }
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.24; import "./IBlast.sol"; interface IERC20Rebasing { // changes the yield mode of the caller and update the balance // to reflect the configuration function configure(YieldMode) external returns (uint256); // "claimable" yield mode accounts can call this to claim their yield // to another address function claim(address recipient, uint256 amount) external returns (uint256); // read the claimable amount for an account function getClaimableAmount(address account) external view returns (uint256); function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); function transfer(address recipient, uint256 amount) external returns (bool); function approve(address spender, uint256 amount) external returns (bool); function getConfiguration(address contractAddress) external view returns (uint8); }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity 0.8.24; /// @title Multicall interface /// @notice Enables calling multiple methods in a single call to the contract interface IMulticall { /// @notice Call multiple functions in the current contract and return the data from all of them if they all succeed /// @dev The `msg.value` should not be trusted for any method callable from multicall. /// @param data The encoded function data for each of the calls to make to this contract /// @return results The results from each of the calls passed in via data function multicall(bytes[] calldata data) external payable returns (bytes[] memory results); }
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.24; import "solady/src/tokens/ERC20.sol"; import "../libraries/accounts/AccountLib.sol"; import "../interfaces/IAccountManager.sol"; interface IAccount { /// @notice Event emitted when `amount` of `asset` is withdrawn from account event Claim(uint256 amount); /// @notice Borrow event emitted when `amount` of `asset` is borrowed on behalf of the account event Borrow(uint256 amount); /// @notice Repay event emitted when `amount` of `asset` is repaid on behalf of the account event Repay(uint256 amount); function asset() external view returns (IERC20); function owner() external view returns (address); /// @dev Returns a unique identifier distinguishing this type of account function getKind() external view returns (bytes32); function getManager() external view returns (IAccountManager); function initialize(address owner_) external; function pause() external; function unpause() external; /// Owner interactions function borrow(uint256 amount) external payable; function repay(uint256 amount) external payable; function claim(uint256 amount) external payable; function claim(uint256 amount, address recipient) external payable; }
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.24; import "@openzeppelin/contracts/utils/structs/EnumerableSet.sol"; import { IERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import { UD60x18, ud } from "@prb/math/src/UD60x18.sol"; import "../libraries/accounts/AccountLib.sol"; import "./ILiquidationReceiver.sol"; interface IAccountManager { function lendingPool() external view returns (address); function isCreatedAccount(address) external view returns (bool); function accountCount() external view returns (uint256); function isApprovedStrategy(address strategy) external view returns (bool); function isLiquidationReceiver(address receiver) external view returns (bool); function pauseAccount(address account) external; function unpauseAccount(address account) external; function getFeeCollector() external view returns (address); function getLiquidationReceiver( address account, address liquidationFeeTo ) external view returns (ILiquidationReceiver); function getLiquidationFee() external returns (AccountLib.LiquidationFee memory); function getAccountOwner(address account) external returns (address owner); // Following three functions are only callable by the target Account itself. function borrow(uint256 amount) external returns (uint256 borrowedAmount); function repay(address account, uint256 amount) external returns (uint256 repaidAmount); function claim(uint256 amount, address recipient) external; function liquidate(address account, address liquidationFeeTo) external returns (ILiquidationReceiver); /// @notice Deposits assets into a strategy on behalf of msg.sender, which must be an Account. function strategyDeposit( address owner, address strategy, uint256 assets, bytes memory data ) external payable returns (uint256 shares); function strategyWithdrawal(address owner, address strategy, uint256 assets, bool didRepay) external; function snapshotAccountHealthFactor() external; function setAllowedAccountsMode(bool status) external; function setAllowedAccountStatus(address account, bool status) external; /// @dev Some strategies have an execution fee that needs to be paid for withdrawal so that must be sent to this /// function. function liquidateStrategy( address account, address liquidationFeeTo, address strategy, bytes memory data ) external payable returns (ILiquidationReceiver); function emitLiquidationFeeEvent( address feeCollector, address liquidationFeeTo, uint256 protocolShare, uint256 liquidatorShare ) external; function getLendAsset() external view returns (IERC20); function getDebtAmount(address account) external view returns (uint256); function getTotalCollateralValue(address account) external view returns (uint256 totalValue); function getAccountLoan(address account) external view returns (AccountLib.Loan memory loan); function getAccountHealth(address account) external view returns (AccountLib.Health memory health); /// @notice Returns whether or not an account is liquidatable. If true, return the timestamp its liquidation started /// at. function getAccountLiquidationStatus(address account) external view returns (AccountLib.LiquidationStatus memory); }
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.24; /// @notice Interface for a price oracle preconfigured to return the price of an asset. /// @dev Price can be in any denomination, depending on the preconfiguration. interface IAssetPriceOracle { function getPrice() external view returns (uint256 price); }
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.24; import { IAssetPriceOracle } from "./IAssetPriceOracle.sol"; /** * @title IAssetPriceProvider interface * @notice Interface for the collateral price provider. * */ interface IAssetPriceProvider { /** * @dev returns the asset price * @param asset the address of the asset * @return price of the asset * */ function getAssetPrice(address asset) external view returns (uint256); }
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.24; import "@openzeppelin/contracts/utils/structs/EnumerableSet.sol"; import { IERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import { UD60x18, ud } from "@prb/math/src/UD60x18.sol"; import "../libraries/accounts/AccountLib.sol"; import "./ILiquidationReceiver.sol"; import "./IAccountManager.sol"; interface ICollateralAccountManager { /// @notice A user has created an account. event AccountCreated(address indexed owner, address account); /// @notice A user has deposited WETH into the contract. event CollateralDeposit(address indexed owner, address account, address sender, uint256 amount); /// @notice A user has withdrawn WETH from the contract. event CollateralWithdrawal(address indexed owner, address account, address receiver, uint256 amount); /// @notice CollateralLiquidation event CollateralLiquidation( address account, uint256 collateralAmount, uint256 bonusCollateral, uint256 debtAmountNeeded ); event LiquidationParametersUpdated(UD60x18 maxLtv, UD60x18 riskThreshold, UD60x18 liquidationThreshold); /// @dev Takes assets from `msg.sender`, deposits them into the contract, and mints shares to the receiver. /// The shares are nontransferrable and reside in the receiver's address, but are used to credit the receiver's /// account contract. function deposit(uint256 assets, address receiver) external returns (uint256 updatedAssets, uint256 shares); /// @dev Burns shares from the account of `msg.sender` and sends them to the receiver. /// `msg.sender` must be owner of account that owns the shares. function withdraw( uint256 shares, address receiver ) external returns (uint256 updatedAssets, uint256 updatedShares); }
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.24; interface IGasTank { function allowList(address user) external returns (bool allowed); function accessControllers(address controller) external returns (bool allowed); function deposit() external payable; function withdraw(uint256 amount) external; function allowListUpdate(address contractAddress, bool allowed) external; function accessControllerUpdate(address accessController, bool allowed) external; function reimburseGas(address receiver, uint256 amount) external; }
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.24; import "solady/src/tokens/ERC20.sol"; import "./IAccount.sol"; abstract contract InternalAccountEvents { /// @notice The owner made a deposit of `amount` into `strategy` event StrategyDeposit(address strategy, uint256 amount); /// @notice The owner withdrew `amount` from `strategy` event StrategyWithdraw(address strategy, uint256 amount); /// @notice The deposits into `strategy` have been forcibly withdrawn and `receveredAmount` was returned /// @dev When strategy == address(0) it indicates a liquidation of the balance in the account event StrategyLiquidated(address indexed strategy, uint256 recoveredAmount); } interface IInternalAccount is IAccount { function strategyDeposit(address strategy, uint256 amount) external; function strategyWithdraw(address strategy, uint256 amount) external; function liquidateStrategy( address strategy, address recipient, uint256 minAmount, bytes memory data ) external payable; }
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.24; import { IERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import { UD60x18, ud } from "@prb/math/src/UD60x18.sol"; interface ILendingPool { function allowedLenders(address lender) external view returns (bool); function deposit(uint256 amount) external returns (uint256); function withdraw(uint256 amount) external returns (uint256); function getMinimumOpenBorrow() external view returns (uint256); function setMinimumOpenBorrow(uint256 amount) external; function setInterestRateStrategy(address newStrategy) external; function getDebtAmount(address borrower) external view returns (uint256); function getDepositAmount(address lender) external view returns (uint256); function getTotalSupply() external view returns (uint256); function getTotalBorrow() external view returns (uint256); function getAsset() external view returns (IERC20); function getNormalizedIncome() external view returns (UD60x18); function getNormalizedDebt() external view returns (UD60x18); function accrueInterest() external; // PermissionedLendingPool Only function updateLenderStatus(address lender, bool status) external; // AccountManager function borrow(uint256 amount, address onBehalfOf) external returns (uint256); ///@dev Repays loan of `onBehalfOf`, transferring funds from `onBehalfOf` function repay(uint256 amount, address onBehalfOf) external returns (uint256); ///@dev Repays loan of `onBehalfOf`, transferring funds from `from` function repay(uint256 amount, address onBehalfOf, address from) external returns (uint256); }
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.24; import { SafeERC20, IERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import { IAccount } from "./IAccount.sol"; import { IAccountManager } from "./IAccountManager.sol"; interface ILiquidationReceiver { struct Props { IERC20 asset; IAccountManager manager; IAccount account; address liquidationFeeTo; } function initialize(Props memory props_) external; function repay() external; }
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.24; import { UD60x18 } from "@prb/math/src/UD60x18.sol"; interface IProtocolGovernor { function getOwner() external view returns (address); function getAddress(bytes32 id) external view returns (address); function getImmutableAddress(bytes32 id) external view returns (address); function setFee(bytes32 id, UD60x18 newFee) external; function getFee(bytes32 id) external view returns (UD60x18); function isProtocolDeprecated() external view returns (bool); // Accounts Managers can open loans on behalf of Accounts they create. function updateAccountManagerStatus(address manager, bool active) external; function isAccountManager(address manager) external view returns (bool); // RBAC function grantRole(bytes32 role, address account) external; function revokeRole(bytes32 role, address account) external; function hasRole(bytes32 role, address account) external view returns (bool); }
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.24; import { UD60x18 } from "@prb/math/src/UD60x18.sol"; // Note: This slippage tolerance might be better to increase as a function of elapse // time. That is, the slippage is higher the longer the account is in liquidation. // A static slippage like this means we'd need to manually increase the value if the // position can't be liquidate with the set slippage tolerance. /// @notice This contract returns the slippageTolerance for a strategy liquidation as a function of how long that /// strategy has been in /// liquidation mode. interface IStrategySlippageModel { function calculateSlippage(uint256 timeSinceLiquidationStarted) external view returns (UD60x18 slippageTolerance); }
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.24; import { UD60x18 } from "@prb/math/src/UD60x18.sol"; import { SafeERC20, IERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import { Vault } from "contracts/libraries/types/Vault.sol"; abstract contract StrategyVaultEvents { /// @notice The deposit cap has been updated to `newDepositCap` event DepositCapUpdated(uint256 newDepositCap); event MaxDepositPerAccountUpdated(uint256 newMaxDeposit); event DepositFeeUpdated(uint256 newDepositFee); event WithdrawalFeeUpdated(uint256 newWithdrawalFee); event LiquidationSlippageModelUpdated(address newModel); event DepositFeeTaken(uint256 amount); } /// @title Omega Strategy Vault Interface /// /// @notice These vaults accept USDC and invest them into a strategy. /// The deposit is done in USDC but the shares are in the underlying asset. /// The underlying asset is referred to as `asset` in the contract. /// These vaults implement _some_ ERC4626 methods. /// There is one significant change for these vaults: the deposit is /// done using USDC instead of the `asset` (i.e. the underlying asset). /// /// @dev Shares are priced in units of the `asset` NOT in USDC /// interface IStrategyVault { function setTotalDepositCap(uint256 newDepositCap) external; function setMaxDepositPerAccount(uint256 newMaxDeposit) external; function setDepositFee(UD60x18 newDepositFee) external; function setWithdrawalFee(UD60x18 newWithdrawalFee) external; function getTotalBaseDeposit() external view returns (uint256); function getBaseAsset() external view returns (IERC20); function getVaultParams() external view returns (Vault.Parameters memory); /// @notice Estimate the ETH execution fee needed for this withdrawal function estimateExecuteDepositGasLimit() external view returns (uint256); function estimateExecuteWithdrawalGasLimit() external view returns (uint256); /// @notice Deposits USDC into the vault /// @param assets The amount of USDC to deposit /// @param data encoded data for the strategy to process the deposit /// @param recipient The address to send the share tokens to function deposit( uint256 assets, bytes memory data, address recipient ) external payable returns (uint256 receivedShares); /// @notice Withdraws `msg.sender` shares from the vault and sends baseAsset to self. /// @param shares The amount of vault shares to withdraw /// @param data encoded data for the strategy to process the withdrawal function withdraw(uint256 shares, bytes memory data) external payable returns (uint256 receivedAmount); /// @notice Performs a complete withdrawal for `msg.sender` and sends funds to receiver. function liquidate(address receiver, uint256 minAmount, bytes memory data) external payable returns (uint256); /// @notice This function allows users to simulate the effects of their withdrawal at the current block. /// @dev Use this to calculate the minAmount of lend token to withdraw during withdrawal /// @param shareAmount The amount of shares to redeem /// @return The amount of lend token that would be redeemed for the amount of shares provided function previewWithdraw(uint256 shareAmount) external view returns (uint256); /// @notice This function allows users to simulate the effects of their deposit at the current block. /// @dev Use this to calculate the minAmount of shares to mint during deposit /// @param assetAmount The amount of assets to deposit /// @return The amount of shares that would be minted for the amount of asset provided function previewDeposit(uint256 assetAmount) external view returns (uint256); function previewDepositOffchain(uint256 assetAmount) external returns (uint256); function previewWithdrawOffchain(uint256 shareAmount) external returns (uint256); /// @notice Returns value of the position of the account denominated in lending token. function getPositionValue(address account) external view returns (uint256); }
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.24; import { EnumerableSet } from "@openzeppelin/contracts/utils/structs/EnumerableSet.sol"; import { IStrategyVault } from "../interfaces/IStrategyVault.sol"; import { UD60x18, ud } from "@prb/math/src/UD60x18.sol"; import { BlastGas } from "contracts/juice/periphery/BlastGas.sol"; import "../external/blast/IERC20Rebasing.sol"; import "../accounts/InternalAccount.sol"; import "../libraries/Errors.sol"; import "../system/ProtocolModule.sol"; /// @title Juice Account /// @notice This account type is used to manage investments into approved strategies. /// The account owner can deposit and withdraw from approved strategies to earn profits. contract JuiceAccount is InternalAccount, BlastGas { using SafeERC20 for IERC20; /// @notice Initialize this permissioned account /// @param owner_ The borrower that owns this account function initialize(address owner_) public virtual override initializer { _initialize(owner_); address _protocolGovernor = ProtocolModule(address(_manager)).getProtocolGovernor(); __BlastGas_init(_protocolGovernor); // Configure Blast Yield IERC20Rebasing(address(asset)).configure(YieldMode.CLAIMABLE); // Configure Blast Points IBlastPoints blast = IBlastPoints(IProtocolGovernor(_protocolGovernor).getImmutableAddress(GovernorLib.BLAST_POINTS)); address operator_ = IProtocolGovernor(_protocolGovernor).getAddress(GovernorLib.BLAST_POINTS_JUICE_ACCOUNTS_OPERATOR); if (operator_ == address(0)) { revert Errors.InvalidParams(); } else { blast.configurePointsOperator(operator_); } } function getKind() external pure override returns (bytes32) { return keccak256(abi.encode("JUICE_INVESTMENT_ACCOUNT")); } function claimYield() external { uint256 claimableYield = IERC20Rebasing(address(asset)).getClaimableAmount(address(this)); address protocolFeeCollector = IProtocolGovernor(ProtocolModule(address(_manager)).getProtocolGovernor()) .getAddress(GovernorLib.FEE_COLLECTOR); if (protocolFeeCollector == address(0)) { revert Errors.InvalidParams(); } IERC20Rebasing(address(asset)).claim(protocolFeeCollector, claimableYield); } }
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.24; import "../../interfaces/IProtocolGovernor.sol"; import "../../libraries/GovernorLib.sol"; import "../../external/blast/IBlast.sol"; /// @title BlastGas /// @notice Exposes a method to claim gas refunds from the contract and send them to the protocol. abstract contract BlastGas { IProtocolGovernor private _protocolGovernor; event GasRefundClaimed(address indexed recipient, uint256 gasClaimed); function __BlastGas_init(address protocolGovernor_) internal { _protocolGovernor = IProtocolGovernor(protocolGovernor_); IBlast blast = IBlast(_protocolGovernor.getImmutableAddress(GovernorLib.BLAST)); blast.configureClaimableGas(); } /// @notice Claims the maximum possible gas from the contract with some recipient. /// @dev This is permissionless because funds will go to the protocol gasFeeWallet and the maximum possible gas will /// be claimed each time. /// @dev IBlast.claimMaxGas guarnatees a 100% claim rate, but not all pending gas fees will be claimed. /// @dev To check the current gas fee information of a contract, call IBlast.readGasParams(contractAddress). function claimMaxGas() external returns (uint256 gasClaimed) { IBlast blast = IBlast(_protocolGovernor.getImmutableAddress(GovernorLib.BLAST)); address _feeCollector = _protocolGovernor.getAddress(GovernorLib.FEE_COLLECTOR); gasClaimed = blast.claimMaxGas(address(this), _feeCollector); emit GasRefundClaimed(_feeCollector, gasClaimed); } }
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.24; import "../../interfaces/IProtocolGovernor.sol"; import "../../libraries/GovernorLib.sol"; import "../../external/blast/IBlast.sol"; /// @title BlastPoints /// @notice Configures a hot wallet that operates the points API for this contract. abstract contract BlastPoints { IProtocolGovernor private _protocolGovernor; event PointsOperatorConfigured(address indexed operator); function __BlastPoints_init(address protocolGovernor_, address pointsOperator_) internal { _protocolGovernor = IProtocolGovernor(protocolGovernor_); IBlastPoints blast = IBlastPoints(_protocolGovernor.getImmutableAddress(GovernorLib.BLAST_POINTS)); blast.configurePointsOperator(pointsOperator_); } }
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.24; // @notice Collections of protocol error messages. library Errors { // GENERAL /// @notice Unauthorized access error Unauthorized(); /// @notice Disabled functionality error FunctionalityDisabled(); /// @notice Functionality not supported error FunctionalityNotSupported(); /// @notice Invalid parameters passed to function error InvalidParams(); /// @notice ZeroAddress error ZeroAddress(); /// @notice Contract does not exist error ContractDoesNotExist(); /// @notice Invalid amount requested by caller error InvalidAmount(); /// @notice when parameter cannot be equal to zero error ParamCannotBeZero(); /// @notice ERC20 is not transferrable error TransferDisabled(); /// @notice Address doesn't have role error UnauthorizedRole(address account, string role); /// @notice Action disabled because contract is deprecated error Deprecated(); // ACCESS // NOTE: maybe this should be refactored into a generic Errors /// @notice Only the lending pool can call this function error OnlyLendingPool(); // COLLATERAL /// @notice Invalid collateral monitor update error InvalidCollateralMonitorUpdate(); error NoTellorValueRetrieved(uint256 timestamp); error StaleTellorValue(uint256 value, uint256 timestamp); error StaleTellorEVMCallTimestamp(uint256 callTimestamp); error CannotGoBackInTime(); error InvalidYieldClaimed(uint256 expectedYield, uint256 actualYield); // LENDING /// @notice Insufficient liquidity to fulfill action error InsufficientLiquidity(); /// @notice User doesn't have enough collateral backing their position error InsufficientCollateral(); /// @notice Requested borrow is not greater than minimum open borrow amount error InvalidMinimumOpenBorrow(); /// @notice Deposit cap exceeded error DepositCapExceeded(); /// @notice Max deposit per account exceeded error MaxDepositPerAccountExceeded(); // FLASH LOANS /// @notice Invalid flash loan balance error InvalidFlashLoanBalance(); /// @notice Invalid flash loan asset error InvalidFlashLoanAsset(); /// @notice Flash loan unpaid error InvalidPostFlashLoanBalance(); /// @notice Invalid flash loan fee error InsufficientFlashLoanFeeAmount(); /// @notice Flash loan recipient doesn't return success error InvalidFlashLoanRecipientReturn(); // ACCOUNTS /// @notice Account failed solvency check after some action. /// @dev The account's debt isn't sufficiently collateralized and/or the account is liquidatable. error AccountInsolvent(); /// @dev Account cannot be liquidated error AccountHealthy(); /// @notice Account is being liquidated error AccountBeingLiquidated(); /// @notice Account is not being liquidated error AccountNotBeingLiquidated(); /// @notice Account hasn't been created yet error AccountNotCreated(); // INVESTMENT /// @notice Account is not liquidatable error NotLiquidatable(); /// @notice Account is not repayable error NotRepayable(); /// @notice Account type invalid error InvalidAccountType(); /// @notice Interaction with a strategy that is not approved error StrategyNotApproved(); /// @notice Liquidator has no funds to repay error NoLiquidatorFunds(); /// @notice Requested profit is not claimable from account (if account has debt or not enough profit to fill request /// amount) error NotClaimableProfit(); /// @notice Used when Gelato automation task was already started error AlreadyStartedTask(); /// @notice Assets not received error WithdrawnAssetsNotReceived(); /////////////////////////// // Multi-step Strategies /////////////////////////// /// @notice Account is attempting to withdraw more strategy shares than their unlocked share balance. /// @dev An account's balanceOf(strategyShareToken) is their totalShareBalance. /// Since some strategies are multi-step, when a account withdraws, those shares are added to a separate variable /// known /// as their lockedShareBalance. /// A account's unlocked share balance when it comes to withdrawals is their totalShareBalance - lockedShareBalance. error PendingStrategyWithdrawal(address account); /// @notice Account cannot deposit into the same multi-step strategy until their previous deposit has cleared. error PendingStrategyDeposit(address account); ////////////////////////// /// OmegaGMXStrategyVault ////////////////////////// /// @notice When already exist a depositKey in the vault error MustNotHavePendingValue(); /// @notice When not sending eth to pay for the fee in a deposit or withdrawal error MustSendETHForExecutionFee(); /// Pyth error PythPriceFeedNotFound(address asset); error PythInvalidNonPositivePrice(address asset); // Particle error ExistingPosition(); error NoPosition(); // strategy error Strategy__MinAssetValueDeposited(); error Strategy__MinReceivedAssets(); error Strategy__Expired(); }
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.24; /// @notice Store keys used by stores in a Governor contract (ProtocolGovernor, etc). library GovernorLib { /////////////// // COMMON /////////////// /// @notice Returns price of an asset given some address. Prices are denominated in the lending pool loan asset. bytes32 public constant PRICE_PROVIDER = keccak256(abi.encode("PRICE_PROVIDER")); /// @notice Address that receives fee generated by lending, accounts, and strategies bytes32 public constant FEE_COLLECTOR = keccak256(abi.encode("FEE_COLLECTOR")); /// @notice Address that is responsible for issuing gas reimbursements to protocol contracts bytes32 public constant GAS_TANK = keccak256(abi.encode("GAS_TANK")); /// @notice Lending Pool bytes32 public constant LENDING_POOL = keccak256(abi.encode("LENDING_POOL")); /// @notice Gelato Automate bytes32 public constant GELATO_AUTOMATE = keccak256(abi.encode("GELATO_AUTOMATE")); /// @notice Asset used to facilitate lending and borrowing. bytes32 public constant LEND_ASSET = keccak256(abi.encode("LEND_ASSET")); /// @notice Blast native contract implementing IBlast interface for configuring gas refunds and native ETH rebasing. bytes32 public constant BLAST = keccak256(abi.encode("BLAST")); /// @notice Blast native contract used on contract initialization to assign an operator that configures points /// received by that smart contract. bytes32 public constant BLAST_POINTS = keccak256(abi.encode("BLAST_POINTS")); bytes32 public constant BLAST_POINTS_JUICE_ACCOUNTS_OPERATOR = keccak256(abi.encode("BLAST_POINTS_JUICE_ACCOUNTS_OPERATOR")); /// @dev Currently unused. Was meant to allow Accounts to redirect yield from idle borrow back to Lending Pool. bytes32 public constant BLAST_LENDER_YIELD_SINK = keccak256(abi.encode("BLAST_LENDER_YIELD_SINK")); /////////////// // FEES /////////////// bytes32 public constant LENDING_FEE = keccak256(abi.encode("LENDING_FEE")); bytes32 public constant FLASH_LOAN_FEE = keccak256(abi.encode("FLASH_LOAN_FEE")); /// @notice % taken from any funds used to repay debt during liquidating state. /* If an Account with 100 USDB Strategy position gets liquidated with protocolShare of 4%, liquidatorShare of 1%. If no slippage, 100 USDB is received by Repayment contract. Repayment contract is executed with: - 4 USDB going to protocol - 1 USDB going to liquidator - 95 USDB going to repay Account debt */ bytes32 public constant PROTOCOL_LIQUIDATION_SHARE = keccak256(abi.encode("PROTOCOL_LIQUIDATION_SHARE")); bytes32 public constant LIQUIDATOR_SHARE = keccak256(abi.encode("LIQUIDATOR_SHARE")); }
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.24; import "./Errors.sol"; import "../interfaces/IProtocolGovernor.sol"; /// @notice List of permissions that can be granted to addresses. library Roles { /// @notice Gas tank depositor bytes32 public constant GAS_TANK_DEPOSITOR = keccak256(abi.encode("GAS_TANK_DEPOSITOR")); /// @notice Protocol maintainer /// @dev A trusted address that can perform maintenance tasks. This will likely be a hot wallet. bytes32 public constant PROTOCOL_MAINTAINER = keccak256(abi.encode("PROTOCOL_MAINTAINER")); function _validateRole( IProtocolGovernor governor, address account, bytes32 role, string memory roleName ) internal view { if (!governor.hasRole(role, account)) { revert Errors.UnauthorizedRole(account, roleName); } } }
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.24; import { UD60x18, ud } from "@prb/math/src/UD60x18.sol"; library AccountLib { /// @notice The type of account that can be created enum Type { EXTERNAL, // Accounts that allow taking funds out of the protocol INTERNAL // Accounts that require funds remain in the protocol } /// @notice The health of the account /// The collateral and equity values are all denominated in the debt amount. struct Health { uint256 debtAmount; uint256 collateralValue; uint256 investmentValue; UD60x18 healthFactor; bool isLiquidatable; bool isRisky; bool hasBadDebt; } /// @notice Expected values resulting from a collateral liquidation. /// @param actualDebtToLiquidate the amount of debt to cover for the account /// @param collateralAmount the amount of collateral to receive /// @param bonusCollateral the amount of bonus collateral included in the collateralAmount struct CollateralLiquidation { uint256 actualDebtToLiquidate; uint256 collateralAmount; uint256 bonusCollateral; } /// @notice The state of an account's lending pool loan struct Loan { /// @notice The amount of debt the borrower has uint256 debtAmount; /// @notice The value of the borrowers collateral in debt token uint256 collateralValue; /// @notice The current loan to value ratio of the borrower UD60x18 ltv; /// @notice Borrower cannot perform a borrow if it puts their ltv over this amount UD60x18 maxLtv; } struct LiquidationStatus { bool isLiquidating; uint256 liquidationStartTime; } /* @notice Liquidator fee. @dev protocolShare + liquidatorShare = liquidationFee. liquidationFee is % deducted from liquidated funds before they are used towards repayment. */ struct LiquidationFee { UD60x18 protocolShare; UD60x18 liquidatorShare; } /// @notice struct CreateAccountProps { address owner; AccountLib.Type accountType; } /// @notice Custom meta txn for creating an account struct CreateAccountData { address owner; uint256 accountType; bytes signature; } /// @notice Data to sign when creating an account gaslessly struct CreateAccount { address owner; uint256 accountType; } }
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.24; import "../Errors.sol"; /// @title Address checker trait /// @notice Introduces methods and modifiers for checking addresses abstract contract AddressCheckerTrait { /// @dev Prevents a contract using an address if it is a zero address modifier nonZeroAddress(address _address) { if (_address == address(0)) { revert Errors.ZeroAddress(); } _; } /// @dev Prevents a contract using an address if it is either a zero address or is not an existing contract modifier nonZeroAddressAndContract(address _address) { if (_address == address(0)) { revert Errors.ZeroAddress(); } if (!_contractExists(_address)) { revert Errors.ContractDoesNotExist(); } _; } /// @notice Returns true if addr is a contract address /// @param addr The address to check function _contractExists(address addr) internal view returns (bool) { return addr.code.length > 0; } }
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.24; import { UD60x18, ud } from "@prb/math/src/UD60x18.sol"; import { IStrategySlippageModel } from "contracts/interfaces/IStrategySlippageModel.sol"; import { SafeERC20, IERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; library Vault { struct BaseInitProps { address protocolGovernor; string vaultName; string vaultSymbol; address baseAsset; } struct Parameters { /// @notice The maximum amount of baseAsset that can be deposited into the vault per user. uint256 maxDepositPerAccount; /// @notice The total cap to apply to deposits in baseAsset. uint256 totalDepositCap; UD60x18 depositFee; UD60x18 withdrawalFee; IStrategySlippageModel liquidationSlippageModel; } }
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.24; import { Address } from "@openzeppelin/contracts/utils/Address.sol"; import { Clones } from "@openzeppelin/contracts/proxy/Clones.sol"; import "solady/src/utils/FixedPointMathLib.sol"; import { Pausable } from "@openzeppelin/contracts/utils/Pausable.sol"; import { ReentrancyGuard } from "@openzeppelin/contracts/utils/ReentrancyGuard.sol"; import { ProtocolModule, ProtocolGovernor } from "../system/ProtocolModule.sol"; import { EnumerableSet } from "@openzeppelin/contracts/utils/structs/EnumerableSet.sol"; import { ILendingPool } from "../interfaces/ILendingPool.sol"; import { SafeERC20, IERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import { UD60x18, ud, UNIT, ZERO } from "@prb/math/src/UD60x18.sol"; import { BaseAccount } from "../accounts/BaseAccount.sol"; import { IAccount } from "../interfaces/IAccount.sol"; import { IAssetPriceOracle } from "../interfaces/IAssetPriceOracle.sol"; import { InternalAccount } from "../accounts/InternalAccount.sol"; import { ExternalAccount } from "../accounts/ExternalAccount.sol"; import "../interfaces/IStrategyVault.sol"; import "../interfaces/IAccountManager.sol"; import "../interfaces/IInternalAccount.sol"; import "../interfaces/IAssetPriceProvider.sol"; import "../interfaces/ILiquidationReceiver.sol"; import "../libraries/accounts/AccountLib.sol"; import "../libraries/Errors.sol"; /// @title Account Factory Events /// @dev Place all events used by the AccountManager contract here abstract contract AccountManagerEvents { /// @notice Additional fees charged to an account (in addition to their lending pool debt). event FeesCharged(address indexed account, uint256 amount); /// @notice Account liquidation started event AccountLiquidationStarted(address indexed account); /// @notice Account liquidation completed event AccountLiquidationCompleted(address indexed account); /// @notice A user has borrowed. event AccountBorrowed(address indexed owner, address indexed account, uint256 amount); /// @notice A user has repaid. event AccountRepaid(address indexed owner, address indexed account, uint256 amount); event LiquidationFeesTaken( address indexed feeCollector, address indexed liquidator, uint256 protocolShare, uint256 liquidatorShare ); /// @dev LiquidationReceiver is created per (account, liquidationFeeTo). event LiquidationReceiverCreated( address indexed account, address indexed liquidationFeeTo, address liquidationReceiver ); /// @notice User claimed assets from their account. event AccountClaimed(address indexed owner, address indexed account, uint256 amount); } /// @title AccountManager /// @notice The AccountManager contract deploys Account contracts. /// Investment Accounts are only createable by the owner of this contract or /// accounts approved by the admin (known as account creators). abstract contract AccountManager is IAccountManager, Pausable, AccountManagerEvents, ProtocolModule, ReentrancyGuard { using EnumerableSet for EnumerableSet.AddressSet; using SafeERC20 for IERC20; using Address for address; using FixedPointMathLib for uint256; error OldAccountDoesNotExist(); error HealthFactorSnapshotNotFound(); error RemainingDebtLeft(); /// @notice The LendingPool contract address for Investment Accounts to use ILendingPool internal immutable _lendingPool; IERC20 internal immutable _lendAsset; /// @notice An mapping of all Account contracts that have been created mapping(address => bool) public isCreatedAccount; /// @notice Account to their owner. mapping(address => address) internal _accountOwnerCache; mapping(address => uint256) internal _accountLiquidationStartTime; mapping(address => mapping(address => ILiquidationReceiver)) public liquidationReceiver; mapping(address => bool) internal _isLiquidationReceiver; /// @notice Counter to keep track of the number of Account contracts that have been created uint256 public accountCount; bool public allowedAccountsMode; mapping(address => bool) public isAccountAllowed; /// @dev Used for storing the health factor of an account for comparison before and after some action. mapping(address => UD60x18) internal _accountHealthFactorSnapshot; // Account configurations /////////////////////////// address immutable liquidationReceiverImpl; modifier onlyAccount() { if (!isCreatedAccount[msg.sender]) { revert Errors.Unauthorized(); } if (allowedAccountsMode && !isAccountAllowed[msg.sender]) { revert Errors.Unauthorized(); } _; } /// @notice Constructs the factory constructor( address protocolGovernor_, address liquidationReceiverImpl_ ) ProtocolModule(protocolGovernor_) nonZeroAddressAndContract(address(_getPriceProvider())) nonZeroAddressAndContract(_getLendingPool()) nonZeroAddressAndContract(liquidationReceiverImpl_) { liquidationReceiverImpl = liquidationReceiverImpl_; _lendingPool = ILendingPool(_getLendingPool()); _lendAsset = IERC20(_getLendAsset()); allowedAccountsMode = true; } ////////////////////////// // Account Administration ////////////////////////// function setAllowedAccountsMode(bool status) external onlyOwner { allowedAccountsMode = status; } function setAllowedAccountStatus(address account, bool status) external onlyOwner { isAccountAllowed[account] = status; } function isLiquidationReceiver(address receiver) external view returns (bool) { return _isLiquidationReceiver[receiver]; } function getAccountOwner(address account) external view returns (address owner) { owner = _accountOwnerCache[account]; } /// @notice Let the owner pause deposits and borrows function pause() external onlyOwner { _pause(); } /// @notice Let the owner unpause deposits and borrows function unpause() external onlyOwner { _unpause(); } /// @notice Lets the admin pause the account function pauseAccount(address account) external onlyOwner { IAccount(account).pause(); } /// @notice Lets the admin unpause the account function unpauseAccount(address account) external onlyOwner { IAccount(account).unpause(); } ///////////////////////////// // Account Functionality ///////////////////////////// function borrow(uint256 amount) external virtual onlyAccount nonReentrant returns (uint256 borrowed) { borrowed = _borrow(msg.sender, amount); } function _borrow(address caller, uint256 amount) internal whenNotPaused returns (uint256 borrowed) { borrowed = _lendingPool.borrow(amount, caller); _requireSolventCheckBorrow(caller, true); emit AccountBorrowed(_accountOwnerCache[caller], caller, borrowed); this._afterBorrow(caller, borrowed); } function repay(address account, uint256 amount) external virtual nonReentrant returns (uint256 repaid) { // Debt repaid is onBehalfOf, funds are transferred from `from`. repaid = _lendingPool.repay(amount, account, msg.sender); emit AccountRepaid(_accountOwnerCache[account], account, repaid); this._afterRepay(account, repaid); } /// @notice Called by Account when its Owner wants to withdraw excess funds. /// @param amount The amount to withdraw /// @param recipient The address to send the assets to function claim(uint256 amount, address recipient) external nonZeroAddress(recipient) onlyAccount nonReentrant { _lendAsset.safeTransferFrom(msg.sender, recipient, amount); _requireSolventCheckBorrow(msg.sender, true); emit AccountClaimed(_accountOwnerCache[msg.sender], msg.sender, amount); } /// @dev Account cannot do any actions involving snapshots if it is being liquidated. function snapshotAccountHealthFactor() external onlyAccount { AccountLib.Health memory health = getAccountHealth(msg.sender); if (health.isLiquidatable) revert Errors.AccountBeingLiquidated(); _accountHealthFactorSnapshot[msg.sender] = health.healthFactor; } /// @notice Mark an account as liquidatable. function liquidate( address account, address liquidationFeeTo ) external returns (ILiquidationReceiver liquidationReceiver_) { return _startLiquidation(account, liquidationFeeTo); } function emitLiquidationFeeEvent( address feeCollector_, address liquidationFeeTo, uint256 protocolShare, uint256 liquidatorShare ) external { if (!_isLiquidationReceiver[msg.sender]) revert Errors.Unauthorized(); emit LiquidationFeesTaken(feeCollector_, liquidationFeeTo, protocolShare, liquidatorShare); } /// @dev Starts the liquidation process on an Account if it is liquidatable. function _startLiquidation( address account, address liquidationFeeTo ) internal returns (ILiquidationReceiver liquidationReceiver_) { AccountLib.Health memory health = getAccountHealth(account); if (!health.isLiquidatable) revert Errors.AccountHealthy(); liquidationReceiver_ = liquidationReceiver[account][liquidationFeeTo]; // Create the liquidator receiver. if (address(liquidationReceiver_) == address(0)) { liquidationReceiver_ = ILiquidationReceiver( Clones.cloneDeterministic(liquidationReceiverImpl, keccak256(abi.encode(account, liquidationFeeTo))) ); liquidationReceiver_.initialize( ILiquidationReceiver.Props({ account: IAccount(account), manager: IAccountManager(address(this)), liquidationFeeTo: liquidationFeeTo, asset: _lendAsset }) ); liquidationReceiver[account][liquidationFeeTo] = liquidationReceiver_; _isLiquidationReceiver[address(liquidationReceiver_)] = true; emit LiquidationReceiverCreated(account, liquidationFeeTo, address(liquidationReceiver_)); } // Account has idle borrowed funds, transfer them to the liquidator receiver. if (_lendAsset.balanceOf(address(account)) > 0) { _lendAsset.safeTransferFrom( address(account), address(liquidationReceiver_), _lendAsset.balanceOf(address(account)) ); liquidationReceiver_.repay(); } // Mark account as liquidatable if it isn't already. if (_accountLiquidationStartTime[account] == 0) { _accountLiquidationStartTime[account] = block.timestamp; emit AccountLiquidationStarted(account); this._afterLiquidationStarted(account); } } function _completeLiquidation(address account) external onlySelf { delete _accountLiquidationStartTime[account]; emit AccountLiquidationCompleted(account); this._afterLiquidationCompleted(account); } /// @dev Used to get the health factor of an account at the current block number. function _getLatestAccountHealthFactorSnapshot(address account) internal view returns (UD60x18 healthFactor) { healthFactor = _accountHealthFactorSnapshot[account]; if (healthFactor == ZERO) revert HealthFactorSnapshotNotFound(); } ///////////////////////// // Account Views ///////////////////////// function lendingPool() external view returns (address) { return address(_lendingPool); } function getLiquidationReceiver( address account, address liquidationFeeTo ) external view returns (ILiquidationReceiver) { return ILiquidationReceiver( Clones.predictDeterministicAddress( liquidationReceiverImpl, keccak256(abi.encode(account, liquidationFeeTo)) ) ); } function getFeeCollector() external view returns (address) { return _getFeeCollector(); } function getLendAsset() external view returns (IERC20) { return _lendingPool.getAsset(); } function getAccountLiquidationStatus(address account) external view returns (AccountLib.LiquidationStatus memory) { return AccountLib.LiquidationStatus({ isLiquidating: _accountLiquidationStartTime[account] > 0, liquidationStartTime: _accountLiquidationStartTime[account] }); } function getLiquidationFee() external view returns (AccountLib.LiquidationFee memory fee) { fee.protocolShare = _protocolLiquidationShare(); fee.liquidatorShare = _liquidatorShare(); } function getDebtAmount(address account) public view virtual returns (uint256) { return _lendingPool.getDebtAmount(account); } function getAccountLoan(address account) public view returns (AccountLib.Loan memory) { uint256 collateralValue = getTotalCollateralValue(account); uint256 debt = getDebtAmount(account); UD60x18 ltv = ZERO; if (collateralValue > 0) { ltv = ud(debt).div(ud(collateralValue)); } return AccountLib.Loan({ debtAmount: debt, collateralValue: collateralValue, ltv: ltv, maxLtv: _getAccountMaxLtv(account) }); } function getAccountHealth(address) public view virtual returns (AccountLib.Health memory health); /// @dev Total value of investments sitting in the Account. function getTotalAccountValue(address account) public view virtual returns (uint256 totalValue); /// @dev Total value of collateral attributed to the Account. function getTotalCollateralValue(address account) public view virtual returns (uint256 totalValue) { } /// @notice Used to ensure the account has performed an operation that doesn't put their loan into an insolvent /// state. function _requireSolvent(address account) internal view { _requireSolventCheckBorrow(account, false); } function _requireSolventCheckBorrow(address account, bool checkBorrow) internal view { // Actions depending on solvency cannot be performed during liquidation state. if (_accountLiquidationStartTime[account] > 0) { revert Errors.AccountBeingLiquidated(); } // Only perform solvency check if Account has debt. if (getDebtAmount(account) > 0) { AccountLib.Health memory health = getAccountHealth(account); if (checkBorrow) { uint256 borrowLimit = ud(health.collateralValue).mul(_getAccountMaxLtv(account)).unwrap(); // Check if borrowed debt is fully collateralized based off max ltv. if (health.debtAmount > borrowLimit) { revert Errors.AccountInsolvent(); } } // If debt is considered fully collateralized, check if the account is at risk (this keeps it some % above // the liquidation threshold). if (health.isRisky) { revert Errors.AccountInsolvent(); } } } /////////////////// // HOOKS /////////////////// function _afterRepay(address account, uint256) external virtual onlySelf { if (_accountLiquidationStartTime[account] > 0) { AccountLib.Health memory health = getAccountHealth(account); if (!health.isLiquidatable) { this._completeLiquidation(account); } } } function _afterBorrow(address account, uint256 borrowed) external virtual onlySelf { } function _afterLiquidationStarted(address account) external virtual onlySelf { } function _afterLiquidationCompleted(address account) external virtual onlySelf { } ////////////////// // INTERNAL ////////////////// function _getAccountMaxLtv(address account) internal view virtual returns (UD60x18); /// @notice Hashes an address with this contract's address /// @param addr The address to convert function _salt(address addr) internal view virtual returns (bytes32) { return keccak256(abi.encodePacked(addr)); } }
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.24; import { IERC20Metadata } from "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol"; import "../managers/StrategyAccountManager.sol"; import "../interfaces/IAssetPriceProvider.sol"; import "../libraries/accounts/AccountLib.sol"; import "../libraries/Errors.sol"; import "../system/ERC20CollateralVault.sol"; import "../system/ProtocolModule.sol"; import "contracts/interfaces/ICollateralAccountManager.sol"; /// @title CollateralAccountManager supports one account implementation /// @notice The AccountManager contract deploys Account contracts. abstract contract CollateralAccountManager is StrategyAccountManager, ICollateralAccountManager, ERC20CollateralVault { using EnumerableSet for EnumerableSet.AddressSet; using SafeERC20 for IERC20; using Address for address; UD60x18 public constant LIQUIDATION_BONUS = UD60x18.wrap(1.05e18); // 105% or 5% /// @notice The max loan to value for Accounts /// @dev If 200%, loan can be maximum 200% of their collateral value UD60x18 public maxLtv; /// @notice The risk threshold for accounts /// @dev (Investment value + Equity value) / Debt value > riskThreshold UD60x18 public riskThreshold; /// @notice The risk threshold for accounts /// @dev (Investment value + Equity value) / Debt value > liquidationThreshold UD60x18 public liquidationThreshold; /// @notice The implementation address of the Internal/External /// Account contracts to use for cloning address public immutable accountImplementation; mapping(address => address) internal _ownerAccountCache; struct InitParams { address account; address liquidationReceiver; address collateral; UD60x18 maxLtv; UD60x18 riskThreshold; UD60x18 liquidationThreshold; string name; string symbol; uint8 decimals; } /// @notice Constructs the factory /// @param params The parameters constructor( address protocolGovernor_, InitParams memory params ) StrategyAccountManager(protocolGovernor_, params.liquidationReceiver) ERC20CollateralVault(params.collateral, params.name, params.symbol, params.decimals) nonZeroAddressAndContract(params.account) { accountImplementation = params.account; _validateLiquidationParameters(params.maxLtv, params.riskThreshold, params.liquidationThreshold); maxLtv = params.maxLtv; riskThreshold = params.riskThreshold; liquidationThreshold = params.liquidationThreshold; } function _validateLiquidationParameters( UD60x18 maxLtv_, UD60x18 riskThreshold_, UD60x18 liquidationThreshold_ ) internal pure { UD60x18 ratio = riskThreshold_.div(liquidationThreshold_); UD60x18 inverseLtv = UNIT + (UNIT / maxLtv_); if (ratio <= UNIT || ratio >= inverseLtv) { revert Errors.InvalidParams(); } } /// @dev Updates maxLtv and riskThreshold. /// riskThreshold must always be less than maxLtv. function updateLiquidationParameters( UD60x18 maxLtv_, UD60x18 riskThreshold_, UD60x18 liquidationThreshold_ ) external onlyOwner { _validateLiquidationParameters(maxLtv_, riskThreshold_, liquidationThreshold_); maxLtv = maxLtv_; riskThreshold = riskThreshold_; liquidationThreshold = liquidationThreshold_; emit LiquidationParametersUpdated(maxLtv, riskThreshold, liquidationThreshold); } /// @dev This call requires that this contract is the account manager on the lending pool function createAccount() public nonReentrant returns (address payable account) { account = _createAccount(msg.sender); } function _createAccount(address caller) internal returns (address payable account) { address owner = caller; if (_ownerAccountCache[owner] != address(0)) { revert Errors.InvalidParams(); } account = payable(Clones.cloneDeterministic(accountImplementation, _salt(owner))); // Record the account was created isCreatedAccount[account] = true; _ownerAccountCache[owner] = account; _accountOwnerCache[account] = owner; accountCount += 1; emit AccountCreated(owner, account); // Initialize the account IAccount(account).initialize(owner); } /// @dev Takes assets from `msg.sender`, deposits them into the contract, and mints shares to the receiver. /// The shares are nontransferrable and reside in the receiver's address, but are used to credit the receiver's /// account contract. function deposit( uint256 assets, address receiver ) public virtual override(ERC20CollateralVault, ICollateralAccountManager) nonReentrant returns (uint256 updatedAssets, uint256 shares) { (updatedAssets, shares) = _deposit(assets, msg.sender, receiver); } function _deposit( uint256 assets, address caller, address receiver ) internal returns (uint256 updatedAssets, uint256 shares) { address _receiverAccount = getAccount(receiver); if (!isCreatedAccount[_receiverAccount]) { revert Errors.InvalidParams(); } (updatedAssets, shares) = super.deposit(assets, receiver); emit CollateralDeposit(receiver, _receiverAccount, caller, updatedAssets); } /// @dev Burns shares from the account of `msg.sender` and sends them to the receiver. /// `msg.sender` must be owner of account that owns the shares. function withdraw( uint256 shares, address receiver ) public virtual override(ERC20CollateralVault, ICollateralAccountManager) nonReentrant returns (uint256 updatedAssets, uint256 updatedShares) { (updatedAssets, updatedShares) = _withdraw(msg.sender, receiver, shares); } function _withdraw( address caller, address receiver, uint256 shares ) internal override returns (uint256 updatedAssets, uint256 updatedShares) { (updatedAssets, updatedShares) = super._withdraw(caller, receiver, shares); address account = getAccount(caller); _requireSolventCheckBorrow(account, true); emit CollateralWithdrawal(caller, getAccount(caller), receiver, updatedAssets); } /////////////////////////// // COLLATERAL LIQUIDATIONS /////////////////////////// /// @dev This calculation assumes that debt asset and collateral asset have the same decimals and have 18 decimal /// precision. function liquidateCollateral(address account, uint256 debtToCover, address liquidationFeeTo) public { AccountLib.Health memory health = getAccountHealth(account); if (!health.isLiquidatable) revert Errors.AccountHealthy(); // Mark account as liquidatable if it isn't already. if (_accountLiquidationStartTime[account] == 0) { _accountLiquidationStartTime[account] = block.timestamp; emit AccountLiquidationStarted(account); this._afterLiquidationStarted(account); } // The collateral is credited to the owner of the Account, not the Account itself. address accountOwner = _accountOwnerCache[account]; uint256 debtAmount = getDebtAmount(account); AccountLib.CollateralLiquidation memory _result = _simulateCollateralLiquidation(accountOwner, debtAmount, debtToCover); // Transfer collateral to caller and their fee wallet _withdrawAssets(accountOwner, msg.sender, _result.collateralAmount - _result.bonusCollateral); _withdrawAssets(accountOwner, liquidationFeeTo, _result.bonusCollateral); // Transfer debt from sender to account. _lendAsset.safeTransferFrom(msg.sender, account, _result.actualDebtToLiquidate); IAccount(account).repay(_result.actualDebtToLiquidate); emit CollateralLiquidation( account, _result.collateralAmount, _result.bonusCollateral, _result.actualDebtToLiquidate ); } function simulateCollateralLiquidation( address account, uint256 debtToCover ) external view returns (AccountLib.CollateralLiquidation memory) { // The collateral is credited to the owner of the Account, not the Account itself. address accountOwner = _accountOwnerCache[account]; uint256 debtAmount = getDebtAmount(account); return _simulateCollateralLiquidation(accountOwner, debtAmount, debtToCover); } function _simulateCollateralLiquidation( address accountOwner, uint256 debtAmount, uint256 debtToCover ) public view returns (AccountLib.CollateralLiquidation memory) { uint256 actualDebtToLiquidate = debtToCover > debtAmount ? debtAmount : debtToCover; uint256 collateralBalance = balanceOfAssets(accountOwner); (uint256 collateralAmount, uint256 bonusCollateral, uint256 debtAmountNeeded) = _calculateAvailableCollateralToLiquidate(actualDebtToLiquidate, collateralBalance); if (debtAmountNeeded < actualDebtToLiquidate) { actualDebtToLiquidate = debtAmountNeeded; } return AccountLib.CollateralLiquidation({ actualDebtToLiquidate: actualDebtToLiquidate, collateralAmount: collateralAmount, bonusCollateral: bonusCollateral }); } function _calculateAvailableCollateralToLiquidate( uint256 debtToCover, uint256 collateralBalance ) internal view returns (uint256 collateralAmount, uint256 bonusCollateral, uint256 debtAmountNeeded) { // TODO: revisit this if it matters because getAssetPrice is in decimals of lend asset. UD60x18 collateralPrice = ud(_getPriceProvider().getAssetPrice(address(_collateral))); uint256 maxCollateralAssetsToLiquidate = ud(debtToCover).mul(LIQUIDATION_BONUS).div(collateralPrice).unwrap(); if (maxCollateralAssetsToLiquidate > collateralBalance) { collateralAmount = collateralBalance; debtAmountNeeded = collateralPrice.mul(ud(collateralAmount)).div(LIQUIDATION_BONUS).unwrap(); } else { collateralAmount = maxCollateralAssetsToLiquidate; debtAmountNeeded = debtToCover; } UD60x18 debtAmountInCollateral = ud(debtAmountNeeded).div(collateralPrice); bonusCollateral = ud(collateralAmount).sub(debtAmountInCollateral).unwrap(); } function _getAccountMaxLtv(address) internal view override returns (UD60x18) { return maxLtv; } ///////////////////////// // Account Views ///////////////////////// /// @notice Returns the Account contract address for a given owner, even if it hasn't been created yet. /// Returns address(0) if the account is not valid /// @param owner_ The owner of the Account contract function getAccount(address owner_) public view returns (address account) { account = _ownerAccountCache[owner_]; if (account == address(0)) { account = Clones.predictDeterministicAddress(accountImplementation, _salt(owner_)); } } function getAccountHealth(address account) public view override returns (AccountLib.Health memory health) { uint256 investmentValue = getTotalAccountValue(account); uint256 collateralValue = getTotalCollateralValue(account); uint256 debtAmount = getDebtAmount(account); uint256 equity = collateralValue + investmentValue; health = AccountLib.Health({ isLiquidatable: false, isRisky: false, hasBadDebt: false, healthFactor: ZERO, debtAmount: debtAmount, collateralValue: collateralValue, investmentValue: investmentValue }); if (debtAmount > 0 && equity > 0) { health.healthFactor = ud(equity).div(ud(debtAmount)); health.isRisky = health.healthFactor < riskThreshold; health.isLiquidatable = health.healthFactor < liquidationThreshold; } else if (debtAmount > 0) { health.hasBadDebt = true; } } /// @dev The nontransferrable collateral vault shares are assigned to the owner of the account so we base /// @dev the value function getTotalCollateralValue(address account) public view override returns (uint256 totalValue) { address owner = _accountOwnerCache[account]; uint256 assets = balanceOfAssets(owner); uint256 price = _getPriceProvider().getAssetPrice(address(_collateral)); totalValue = (assets * price) / (10 ** _collateralAssetDecimals); } }
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.24; import "./AccountManager.sol"; import "solady/src/utils/FixedPointMathLib.sol"; /// @title Account Factory Events /// @dev Place all events used by the AccountManager contract here abstract contract StrategyAccountManagerEvents { /// @notice The owner has made their first deposit into `strategy` event StrategyActivated(address indexed owner, address indexed account, address indexed strategy); /// @notice The owner has withdrawn their last deposit from `strategy` event StrategyDeactivated(address indexed owner, address indexed account, address indexed strategy); /// @notice The admin has approved the account to use `strategy` event StrategyUpdated(address strategy, bool approval); /// @notice The slippage tolerated for withdraws from strategies has been updated to `tolerance` event MaximumSlippageToleranceUpdated(UD60x18 tolerance); } /// @title AccountManager /// @notice The AccountManager contract deploys Account contracts. /// Investment Accounts are only createable by the owner of this contract or /// accounts approved by the admin (known as account creators). abstract contract StrategyAccountManager is AccountManager, StrategyAccountManagerEvents { using EnumerableSet for EnumerableSet.AddressSet; using SafeERC20 for IERC20; using Address for address; /// @notice The strategies that are approved to use for permissioned accounts mapping(address => bool) public approvedStrategies; /// @notice Map of accounts to their active strategies mapping(address => EnumerableSet.AddressSet) internal _activeStrategies; /// @notice Constructs the factory constructor( address protocolGovernor_, address liquidationReceiverImpl_ ) AccountManager(protocolGovernor_, liquidationReceiverImpl_) { } /// @notice Get an active strategy's address by index /// @param index The index of the active strategy function getActiveStrategy(address account, uint256 index) external view returns (address) { return _activeStrategies[account].at(index); } /// @notice Get the number of active strategies function getActiveStrategyCount(address account) external view returns (uint256) { return _activeStrategies[account].length(); } /// @dev This is called by the Account to check if the strategy is approved. /// @dev Mainly to consolidate events into the Manager though. function strategyDeposit( address owner, address strategy, uint256 amount, bytes memory data ) external payable virtual onlyAccount nonReentrant returns (uint256 shares) { shares = _strategyDeposit(msg.sender, owner, strategy, amount, data); } function _strategyDeposit( address caller, address owner, address strategy, uint256 amount, bytes memory data ) internal returns (uint256 shares) { if (!approvedStrategies[strategy]) { revert Errors.StrategyNotApproved(); } if (_activeStrategies[caller].add(strategy)) { emit StrategyActivated(owner, caller, strategy); } uint256 executionGasLimit = 0; if (strategy != address(0)) { executionGasLimit = IStrategyVault(strategy).estimateExecuteDepositGasLimit(); } uint256 executionFee = 0; if (executionGasLimit > 0) { executionFee = executionGasLimit * tx.gasprice; } shares = IStrategyVault(strategy).deposit{ value: executionFee }(amount, data, caller); _requireSolventCheckBorrow(caller, true); } function strategyWithdrawal( address owner, address strategy, uint256 assets, bool didRepay ) external virtual onlyAccount nonReentrant { _strategyWithdrawal(msg.sender, owner, strategy, assets, didRepay); } function _strategyWithdrawal(address caller, address owner, address strategy, uint256, bool didRepay) internal { // Deactivate the strategy if it has no more funds // Strategy balanceOf will not return less than 0 // slither-disable-next-line incorrect-equality if (strategy != address(0) && IStrategyVault(strategy).getPositionValue(caller) == 0) { // slither-disable-next-line unused-return _activeStrategies[caller].remove(strategy); emit StrategyDeactivated(owner, caller, strategy); } // Caller repaid with strategy withdrawal, skip solvency check and make sure their health factor improved. // They should have requested for a snapshot to be taken earlier. if (didRepay) { UD60x18 lastHealthFactor = _getLatestAccountHealthFactorSnapshot(caller); UD60x18 currentHealthFactor = getAccountHealth(caller).healthFactor; if (lastHealthFactor > currentHealthFactor && getAccountHealth(caller).debtAmount > 0) { revert Errors.AccountInsolvent(); } _accountHealthFactorSnapshot[caller] = ZERO; } else { _requireSolvent(caller); } } /// @dev LiquidationReceiver is the recipient of the liquidated funds. /// In case of multi transaction withdrawal strategies, liquidator must wait for liquidationReceiver to receive /// funds before /// calling liquidationReceiver.repay(). function liquidateStrategy( address account, address liquidationFeeTo, address strategy, bytes memory data ) external payable virtual returns (ILiquidationReceiver liquidationReceiver_) { if (!approvedStrategies[strategy]) { revert Errors.StrategyNotApproved(); } liquidationReceiver_ = _startLiquidation(account, liquidationFeeTo); // We calculate this as the strategy level now. Leftover for backwards compatibility. uint256 minAmountAfterSlippage = 0; uint256 executionGasLimit = 0; if (strategy != address(0)) { executionGasLimit = IStrategyVault(strategy).estimateExecuteWithdrawalGasLimit(); } uint256 executionFee = 0; if (executionGasLimit > 0) { executionFee = executionGasLimit * tx.gasprice; } IInternalAccount(account).liquidateStrategy{ value: executionFee }( strategy, address(liquidationReceiver_), minAmountAfterSlippage, data ); // Deactivate the strategy if it has no more funds // Strategy balanceOf will not return less than 0 // slither-disable-next-line incorrect-equality if (strategy != address(0) && IStrategyVault(strategy).getPositionValue(account) == 0) { // slither-disable-next-line unused-return _activeStrategies[account].remove(strategy); emit StrategyDeactivated(_accountOwnerCache[account], account, strategy); } if (_lendAsset.balanceOf(address(liquidationReceiver_)) > 0) { liquidationReceiver_.repay(); } } /// @notice Get the value of all strategies investments /// @return totalValue The value of all strategy investments in lendAsset function getTotalAccountValue(address account) public view override returns (uint256 totalValue) { totalValue = _lendAsset.balanceOf(address(account)); // Sum the value of all active strategy vaults // Note: This needs attention as getPositionValue may revert, it contains external calls // slither-disable-next-line calls-loop for (uint256 i = 0; i < _activeStrategies[account].length(); i++) { // Note: This needs attention as getPositionValue may revert, it contains external calls // slither-disable-next-line calls-loop totalValue += IStrategyVault(_activeStrategies[account].at(i)).getPositionValue(account); } } function updateStrategyApproval(address strategy, bool approval) external onlyOwner { approvedStrategies[strategy] = approval; emit StrategyUpdated(strategy, approval); } function isApprovedStrategy(address strategy) external view returns (bool) { return approvedStrategies[strategy]; } }
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.24; import "../external/uniswap/interfaces/IMulticall.sol"; /// @title Multicall /// @notice Enables calling multiple methods in a single call to the contract abstract contract Multicall is IMulticall { /// @inheritdoc IMulticall function multicall(bytes[] calldata data) public payable virtual override returns (bytes[] memory results) { results = new bytes[](data.length); for (uint256 i = 0; i < data.length; i++) { (bool success, bytes memory result) = address(this).delegatecall(data[i]); if (!success) { // Next 5 lines from https://ethereum.stackexchange.com/a/83577 if (result.length < 68) revert(); assembly { result := add(result, 0x04) } revert(abi.decode(result, (string))); } results[i] = result; } } }
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.24; import "../libraries/Errors.sol"; import "../libraries/traits/AddressCheckerTrait.sol"; import { SafeERC20, IERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import "solady/src/tokens/ERC20.sol"; import "solady/src/utils/FixedPointMathLib.sol"; /// @notice A vault that holds a single asset as collateral. /// @dev It discards stealth donations and tracks its underlying collateral balance manually. /// It is non-transferrable because of how it is used to track the collateral backing loans taken by user owned smart /// contract accounts. abstract contract ERC20CollateralVault is ERC20, AddressCheckerTrait { using SafeERC20 for IERC20; using FixedPointMathLib for uint256; IERC20 internal immutable _collateral; uint256 internal _totalCollateralAssets; uint8 internal immutable _collateralAssetDecimals; string private _name; string private _symbol; constructor( address collateral_, string memory name_, string memory symbol_, uint8 decimals_ ) nonZeroAddressAndContract(collateral_) { _collateral = IERC20(collateral_); _collateralAssetDecimals = decimals_; _name = name_; _symbol = symbol_; } function name() public view override returns (string memory) { return _name; } function symbol() public view override returns (string memory) { return _symbol; } function decimals() public view override returns (uint8) { return _collateralAssetDecimals; } function deposit(uint256 assets, address receiver) public virtual returns (uint256 updatedAssets, uint256 shares) { (updatedAssets, shares) = _deposit(msg.sender, receiver, assets); } function withdraw( uint256 shares, address receiver ) public virtual returns (uint256 updatedAssets, uint256 updatedShares) { (updatedAssets, updatedShares) = _withdraw(msg.sender, receiver, shares); } function previewDeposit(uint256 assets) public view virtual returns (uint256 updatedAssets, uint256 shares) { shares = _convertToShares(assets); updatedAssets = _convertToAssets(shares); } function previewWithdraw(uint256 shares) public view virtual returns (uint256 assets, uint256 updatedShares) { assets = _convertToAssets(shares); updatedShares = shares; } function _deposit( address caller, address receiver, uint256 assets ) internal virtual returns (uint256 updatedAssets, uint256 shares) { (updatedAssets, shares) = previewDeposit(assets); _totalCollateralAssets += updatedAssets; _collateral.safeTransferFrom(caller, address(this), updatedAssets); _mint(receiver, shares); } function _withdraw( address caller, address receiver, uint256 shares ) internal virtual returns (uint256 updatedAssets, uint256 updatedShares) { (updatedAssets, updatedShares) = previewWithdraw(shares); _totalCollateralAssets -= updatedAssets; _burn(caller, updatedShares); _collateral.safeTransfer(receiver, updatedAssets); } function _withdrawAssets(address caller, address receiver, uint256 assets) internal virtual { // Round up the amount of shares to burn given some assets. uint256 shares = assets.mulDivUp(totalSupply(), totalAssets()); _totalCollateralAssets -= assets; shares = balanceOf(caller) < shares ? balanceOf(caller) : shares; _burn(caller, shares); _collateral.safeTransfer(receiver, assets); } /// @dev Returns the shares minted for given assets, rounding down. function _convertToShares(uint256 assets) internal view returns (uint256) { return totalSupply() == 0 ? assets : assets * totalSupply() / totalAssets(); } /// @dev Returns the assets transferred for given shares, rounding down. function _convertToAssets(uint256 shares) internal view returns (uint256) { return totalSupply() == 0 ? shares : shares * totalAssets() / totalSupply(); } function balanceOfAssets(address account) public view returns (uint256 assets) { return _convertToAssets(balanceOf(account)); } function totalAssets() public view virtual returns (uint256) { return _totalCollateralAssets; } /// @notice Disables transfers other than mint and burn /// @dev Done explicitly because solady transfers do not prevent transferring to zero address. function transfer(address, uint256) public pure override returns (bool) { revert Errors.TransferDisabled(); } function transferFrom(address, address, uint256) public pure override returns (bool) { revert Errors.TransferDisabled(); } }
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.24; import { UD60x18, ud, UNIT, ZERO } from "@prb/math/src/UD60x18.sol"; import "@openzeppelin/contracts/utils/structs/EnumerableSet.sol"; import "@openzeppelin/contracts/access/Ownable2Step.sol"; import "../libraries/Errors.sol"; import "../libraries/traits/AddressCheckerTrait.sol"; import "../libraries/GovernorLib.sol"; import "../interfaces/IProtocolGovernor.sol"; import "../libraries/Roles.sol"; abstract contract ProtocolGovernorEvents { event FeeUpdated(bytes32 indexed id, UD60x18 newFee); event AddressSet(bytes32 indexed id, address newAddress); event ImmutableAddressSet(bytes32 indexed id, address newAddress); event ManagerStatusUpdated(address indexed manager, bool status); event InvestmentAccountRegistered(address indexed account); event InvestmentAccountCreditIncreased(address indexed account, uint256 amount); event InvestmentAccountCreditDecreased(address indexed account, uint256 amount); event RoleSet(bytes32 indexed role, address indexed account, bool status); event ProtocolDeprecatedStatusSet(bool status); } /** * @title ProtocolGovernor * @dev Allows for storing and management of common protocol data (roles, addresses, configuration). */ contract ProtocolGovernor is Ownable2Step, AddressCheckerTrait, ProtocolGovernorEvents, IProtocolGovernor { /// @notice Map of contract names to their contract addresses. mapping(bytes32 => address) internal _addresses; /// @notice Immutable map of contract names to their contract addresses. mapping(bytes32 => address) internal _immutableAddresses; /// @notice Map of fee IDs to their fees. /// @dev Fees cannot be greater than or equal to 100%. mapping(bytes32 => UD60x18) internal _fees; /// @notice Managers that can register accounts. mapping(address => bool) internal _managers; /// @notice Tracking roles granted to addresses. mapping(address => mapping(bytes32 => bool)) internal _roles; /// @notice If true, the protocol is deprecated and no longer accepting inflows (lending pool deposit, borrow, /// strategy deposit should be disabled). bool private _isProtocolDeprecated; /// @dev Parameters for initializing the Protocol Governor struct InitParams { address lendAsset; // Address of the asset address feeCollector; } constructor(InitParams memory params) Ownable(msg.sender) nonZeroAddress(params.feeCollector) nonZeroAddressAndContract(params.lendAsset) { _setImmutableAddress(GovernorLib.LEND_ASSET, params.lendAsset); _setAddress(GovernorLib.FEE_COLLECTOR, params.feeCollector); _fees[GovernorLib.LENDING_FEE] = ud(0.1e18); _fees[GovernorLib.PROTOCOL_LIQUIDATION_SHARE] = ud(0.05e18); _fees[GovernorLib.LIQUIDATOR_SHARE] = ZERO; _fees[GovernorLib.FLASH_LOAN_FEE] = ud(0); } /** * @dev Only allows addresses that are the protocol admin to call the function. */ modifier onlyProtocolOwner() { if (owner() != _msgSender()) { revert Errors.UnauthorizedRole(_msgSender(), "PROTOCOL_ADMIN"); } _; } modifier onlyManager() { if (!_managers[_msgSender()]) { revert Errors.UnauthorizedRole(_msgSender(), "ACCOUNT_MANAGER"); } _; } function getOwner() external view returns (address) { return Ownable.owner(); } function setProtocolDeprecatedStatus(bool status) external onlyProtocolOwner { _isProtocolDeprecated = status; emit ProtocolDeprecatedStatusSet(status); } function isProtocolDeprecated() external view returns (bool) { return _isProtocolDeprecated; } //////////////////// // ADDRESS PROVIDER ////////////////////// /// @dev Sets an address by id function setAddress(bytes32 id, address addr) public onlyProtocolOwner { _setAddress(id, addr); } function _setAddress(bytes32 id, address addr) internal nonZeroAddress(addr) { _addresses[id] = addr; emit AddressSet(id, addr); } // @dev Initialize an address by id, this cannot be changed after being set. function setImmutableAddress(bytes32 id, address addr) public onlyProtocolOwner { _setImmutableAddress(id, addr); } function _setImmutableAddress(bytes32 id, address addr) internal nonZeroAddress(addr) { if (_immutableAddresses[id] != address(0)) { revert Errors.InvalidParams(); } _immutableAddresses[id] = addr; emit ImmutableAddressSet(id, addr); } /// @dev Returns an address by id function getAddress(bytes32 id) external view returns (address) { return _addresses[id]; } /// @dev Returns an immutable address by id function getImmutableAddress(bytes32 id) external view returns (address) { return _immutableAddresses[id]; } /////////////////////// // FEE CONFIGURATION /////////////////////// /// @notice newFee cannot be 100% (it must be < 1e18) function setFee(bytes32 id, UD60x18 newFee) external onlyProtocolOwner { if (newFee >= UNIT) { revert Errors.InvalidParams(); } _fees[id] = newFee; emit FeeUpdated(id, newFee); } function getFee(bytes32 id) external view returns (UD60x18) { return _fees[id]; } ///////////////////// // Protocol wide ACL ///////////////////// function grantRole(bytes32 role, address account) external onlyProtocolOwner { _roles[account][role] = true; emit RoleSet(role, account, true); } function revokeRole(bytes32 role, address account) external onlyProtocolOwner { _roles[account][role] = false; emit RoleSet(role, account, false); } function hasRole(bytes32 role, address account) external view returns (bool) { return _roles[account][role]; } function updateAccountManagerStatus(address manager, bool status) external onlyProtocolOwner { _managers[manager] = status; emit ManagerStatusUpdated(manager, status); } function isAccountManager(address manager) external view returns (bool) { return _managers[manager]; } }
// SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.24; import "./ProtocolGovernor.sol"; import { Context } from "@openzeppelin/contracts/utils/Context.sol"; import { Errors } from "../libraries/Errors.sol"; import "../libraries/traits/AddressCheckerTrait.sol"; import { UD60x18, ud } from "@prb/math/src/UD60x18.sol"; import "../interfaces/IGasTank.sol"; import "../interfaces/IAssetPriceProvider.sol"; import "../interfaces/IProtocolGovernor.sol"; import "../interfaces/IStrategySlippageModel.sol"; import "../libraries/GovernorLib.sol"; import "../libraries/Roles.sol"; /** * @title ProtocolModule * @dev Contract for shared protocol functionality */ abstract contract ProtocolModule is Context, AddressCheckerTrait { using Roles for IProtocolGovernor; IProtocolGovernor internal immutable _protocolGovernor; /** * @dev Constructor that initializes the role store for this contract. * @param protocolGovernor_ The contract instance to use as the role store. */ constructor(address protocolGovernor_) { _protocolGovernor = IProtocolGovernor(protocolGovernor_); } ///////////////// /// PERMISSIONS ///////////////// modifier whenProtocolNotDeprecated() { require(!_protocolGovernor.isProtocolDeprecated(), "PROTOCOL_DEPRECATED"); _; } /** * @dev Only allows the contract's own address to call the function. */ modifier onlySelf() { if (msg.sender != address(this)) { revert Errors.UnauthorizedRole(msg.sender, "SELF"); } _; } modifier onlyAccountManager() { if (!_protocolGovernor.isAccountManager(_msgSender())) { revert Errors.UnauthorizedRole(_msgSender(), "ACCOUNT_MANAGER"); } _; } modifier onlyGasTankDepositor() { _protocolGovernor._validateRole(msg.sender, Roles.GAS_TANK_DEPOSITOR, "GAS_TANK_DEPOSITOR"); _; } modifier onlyProtocolMaintainer() { _protocolGovernor._validateRole(msg.sender, Roles.PROTOCOL_MAINTAINER, "PROTOCOL_MAINTAINER"); _; } /** * @dev Only allows addresses that are the protocol admin to call the function. */ modifier onlyOwner() { if (!_isOwner(_msgSender())) { revert Errors.UnauthorizedRole(_msgSender(), "PROTOCOL_ADMIN"); } _; } function _isOwner(address account) internal view returns (bool) { if (_protocolGovernor.getOwner() != account) { return false; } return true; } ///////////////////// // ADDRESS PROVIDER ///////////////////// function getProtocolGovernor() external view virtual returns (address) { return address(_protocolGovernor); } /// @notice Returns fee collector function _getFeeCollector() internal view returns (address) { return _protocolGovernor.getAddress(GovernorLib.FEE_COLLECTOR); } /// @notice Returns asset price provider address. /// @dev This price provider MUST return the asset prices denominated in lend asset. /// @dev If lend asset is USDC, asset prices must be in USDC. function _getPriceProvider() internal view returns (IAssetPriceProvider) { return IAssetPriceProvider(_protocolGovernor.getAddress(GovernorLib.PRICE_PROVIDER)); } /// @notice Gas Tank function _getGasTank() internal view returns (IGasTank) { return IGasTank(_protocolGovernor.getAddress(GovernorLib.GAS_TANK)); } function _getLendAsset() internal view returns (address) { return _protocolGovernor.getImmutableAddress(GovernorLib.LEND_ASSET); } function _getLendingPool() internal view returns (address) { return _protocolGovernor.getImmutableAddress(GovernorLib.LENDING_POOL); } // FEE CONFIGURATION ////////////////////// function _lendingFee() internal view returns (UD60x18) { return _protocolGovernor.getFee(GovernorLib.LENDING_FEE); } function _flashLoanFee() internal view returns (UD60x18) { return _protocolGovernor.getFee(GovernorLib.FLASH_LOAN_FEE); } function _protocolLiquidationShare() internal view returns (UD60x18) { return _protocolGovernor.getFee(GovernorLib.PROTOCOL_LIQUIDATION_SHARE); } function _liquidatorShare() internal view returns (UD60x18) { return _protocolGovernor.getFee(GovernorLib.LIQUIDATOR_SHARE); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; /// @notice Simple ERC20 + EIP-2612 implementation. /// @author Solady (https://github.com/vectorized/solady/blob/main/src/tokens/ERC20.sol) /// @author Modified from Solmate (https://github.com/transmissions11/solmate/blob/main/src/tokens/ERC20.sol) /// @author Modified from OpenZeppelin (https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC20/ERC20.sol) /// /// @dev Note: /// - The ERC20 standard allows minting and transferring to and from the zero address, /// minting and transferring zero tokens, as well as self-approvals. /// For performance, this implementation WILL NOT revert for such actions. /// Please add any checks with overrides if desired. /// - The `permit` function uses the ecrecover precompile (0x1). /// /// If you are overriding: /// - NEVER violate the ERC20 invariant: /// the total sum of all balances must be equal to `totalSupply()`. /// - Check that the overridden function is actually used in the function you want to /// change the behavior of. Much of the code has been manually inlined for performance. abstract contract ERC20 { /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* CUSTOM ERRORS */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev The total supply has overflowed. error TotalSupplyOverflow(); /// @dev The allowance has overflowed. error AllowanceOverflow(); /// @dev The allowance has underflowed. error AllowanceUnderflow(); /// @dev Insufficient balance. error InsufficientBalance(); /// @dev Insufficient allowance. error InsufficientAllowance(); /// @dev The permit is invalid. error InvalidPermit(); /// @dev The permit has expired. error PermitExpired(); /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* EVENTS */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev Emitted when `amount` tokens is transferred from `from` to `to`. event Transfer(address indexed from, address indexed to, uint256 amount); /// @dev Emitted when `amount` tokens is approved by `owner` to be used by `spender`. event Approval(address indexed owner, address indexed spender, uint256 amount); /// @dev `keccak256(bytes("Transfer(address,address,uint256)"))`. uint256 private constant _TRANSFER_EVENT_SIGNATURE = 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef; /// @dev `keccak256(bytes("Approval(address,address,uint256)"))`. uint256 private constant _APPROVAL_EVENT_SIGNATURE = 0x8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925; /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* STORAGE */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev The storage slot for the total supply. uint256 private constant _TOTAL_SUPPLY_SLOT = 0x05345cdf77eb68f44c; /// @dev The balance slot of `owner` is given by: /// ``` /// mstore(0x0c, _BALANCE_SLOT_SEED) /// mstore(0x00, owner) /// let balanceSlot := keccak256(0x0c, 0x20) /// ``` uint256 private constant _BALANCE_SLOT_SEED = 0x87a211a2; /// @dev The allowance slot of (`owner`, `spender`) is given by: /// ``` /// mstore(0x20, spender) /// mstore(0x0c, _ALLOWANCE_SLOT_SEED) /// mstore(0x00, owner) /// let allowanceSlot := keccak256(0x0c, 0x34) /// ``` uint256 private constant _ALLOWANCE_SLOT_SEED = 0x7f5e9f20; /// @dev The nonce slot of `owner` is given by: /// ``` /// mstore(0x0c, _NONCES_SLOT_SEED) /// mstore(0x00, owner) /// let nonceSlot := keccak256(0x0c, 0x20) /// ``` uint256 private constant _NONCES_SLOT_SEED = 0x38377508; /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* CONSTANTS */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev `(_NONCES_SLOT_SEED << 16) | 0x1901`. uint256 private constant _NONCES_SLOT_SEED_WITH_SIGNATURE_PREFIX = 0x383775081901; /// @dev `keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)")`. bytes32 private constant _DOMAIN_TYPEHASH = 0x8b73c3c69bb8fe3d512ecc4cf759cc79239f7b179b0ffacaa9a75d522b39400f; /// @dev `keccak256("1")`. bytes32 private constant _VERSION_HASH = 0xc89efdaa54c0f20c7adf612882df0950f5a951637e0307cdcb4c672f298b8bc6; /// @dev `keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)")`. bytes32 private constant _PERMIT_TYPEHASH = 0x6e71edae12b1b97f4d1f60370fef10105fa2faae0126114a169c64845d6126c9; /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* ERC20 METADATA */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev Returns the name of the token. function name() public view virtual returns (string memory); /// @dev Returns the symbol of the token. function symbol() public view virtual returns (string memory); /// @dev Returns the decimals places of the token. function decimals() public view virtual returns (uint8) { return 18; } /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* ERC20 */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev Returns the amount of tokens in existence. function totalSupply() public view virtual returns (uint256 result) { /// @solidity memory-safe-assembly assembly { result := sload(_TOTAL_SUPPLY_SLOT) } } /// @dev Returns the amount of tokens owned by `owner`. function balanceOf(address owner) public view virtual returns (uint256 result) { /// @solidity memory-safe-assembly assembly { mstore(0x0c, _BALANCE_SLOT_SEED) mstore(0x00, owner) result := sload(keccak256(0x0c, 0x20)) } } /// @dev Returns the amount of tokens that `spender` can spend on behalf of `owner`. function allowance(address owner, address spender) public view virtual returns (uint256 result) { /// @solidity memory-safe-assembly assembly { mstore(0x20, spender) mstore(0x0c, _ALLOWANCE_SLOT_SEED) mstore(0x00, owner) result := sload(keccak256(0x0c, 0x34)) } } /// @dev Sets `amount` as the allowance of `spender` over the caller's tokens. /// /// Emits a {Approval} event. function approve(address spender, uint256 amount) public virtual returns (bool) { /// @solidity memory-safe-assembly assembly { // Compute the allowance slot and store the amount. mstore(0x20, spender) mstore(0x0c, _ALLOWANCE_SLOT_SEED) mstore(0x00, caller()) sstore(keccak256(0x0c, 0x34), amount) // Emit the {Approval} event. mstore(0x00, amount) log3(0x00, 0x20, _APPROVAL_EVENT_SIGNATURE, caller(), shr(96, mload(0x2c))) } return true; } /// @dev Transfer `amount` tokens from the caller to `to`. /// /// Requirements: /// - `from` must at least have `amount`. /// /// Emits a {Transfer} event. function transfer(address to, uint256 amount) public virtual returns (bool) { _beforeTokenTransfer(msg.sender, to, amount); /// @solidity memory-safe-assembly assembly { // Compute the balance slot and load its value. mstore(0x0c, _BALANCE_SLOT_SEED) mstore(0x00, caller()) let fromBalanceSlot := keccak256(0x0c, 0x20) let fromBalance := sload(fromBalanceSlot) // Revert if insufficient balance. if gt(amount, fromBalance) { mstore(0x00, 0xf4d678b8) // `InsufficientBalance()`. revert(0x1c, 0x04) } // Subtract and store the updated balance. sstore(fromBalanceSlot, sub(fromBalance, amount)) // Compute the balance slot of `to`. mstore(0x00, to) let toBalanceSlot := keccak256(0x0c, 0x20) // Add and store the updated balance of `to`. // Will not overflow because the sum of all user balances // cannot exceed the maximum uint256 value. sstore(toBalanceSlot, add(sload(toBalanceSlot), amount)) // Emit the {Transfer} event. mstore(0x20, amount) log3(0x20, 0x20, _TRANSFER_EVENT_SIGNATURE, caller(), shr(96, mload(0x0c))) } _afterTokenTransfer(msg.sender, to, amount); return true; } /// @dev Transfers `amount` tokens from `from` to `to`. /// /// Note: Does not update the allowance if it is the maximum uint256 value. /// /// Requirements: /// - `from` must at least have `amount`. /// - The caller must have at least `amount` of allowance to transfer the tokens of `from`. /// /// Emits a {Transfer} event. function transferFrom(address from, address to, uint256 amount) public virtual returns (bool) { _beforeTokenTransfer(from, to, amount); /// @solidity memory-safe-assembly assembly { let from_ := shl(96, from) // Compute the allowance slot and load its value. mstore(0x20, caller()) mstore(0x0c, or(from_, _ALLOWANCE_SLOT_SEED)) let allowanceSlot := keccak256(0x0c, 0x34) let allowance_ := sload(allowanceSlot) // If the allowance is not the maximum uint256 value. if add(allowance_, 1) { // Revert if the amount to be transferred exceeds the allowance. if gt(amount, allowance_) { mstore(0x00, 0x13be252b) // `InsufficientAllowance()`. revert(0x1c, 0x04) } // Subtract and store the updated allowance. sstore(allowanceSlot, sub(allowance_, amount)) } // Compute the balance slot and load its value. mstore(0x0c, or(from_, _BALANCE_SLOT_SEED)) let fromBalanceSlot := keccak256(0x0c, 0x20) let fromBalance := sload(fromBalanceSlot) // Revert if insufficient balance. if gt(amount, fromBalance) { mstore(0x00, 0xf4d678b8) // `InsufficientBalance()`. revert(0x1c, 0x04) } // Subtract and store the updated balance. sstore(fromBalanceSlot, sub(fromBalance, amount)) // Compute the balance slot of `to`. mstore(0x00, to) let toBalanceSlot := keccak256(0x0c, 0x20) // Add and store the updated balance of `to`. // Will not overflow because the sum of all user balances // cannot exceed the maximum uint256 value. sstore(toBalanceSlot, add(sload(toBalanceSlot), amount)) // Emit the {Transfer} event. mstore(0x20, amount) log3(0x20, 0x20, _TRANSFER_EVENT_SIGNATURE, shr(96, from_), shr(96, mload(0x0c))) } _afterTokenTransfer(from, to, amount); return true; } /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* EIP-2612 */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev For more performance, override to return the constant value /// of `keccak256(bytes(name()))` if `name()` will never change. function _constantNameHash() internal view virtual returns (bytes32 result) {} /// @dev Returns the current nonce for `owner`. /// This value is used to compute the signature for EIP-2612 permit. function nonces(address owner) public view virtual returns (uint256 result) { /// @solidity memory-safe-assembly assembly { // Compute the nonce slot and load its value. mstore(0x0c, _NONCES_SLOT_SEED) mstore(0x00, owner) result := sload(keccak256(0x0c, 0x20)) } } /// @dev Sets `value` as the allowance of `spender` over the tokens of `owner`, /// authorized by a signed approval by `owner`. /// /// Emits a {Approval} event. function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) public virtual { bytes32 nameHash = _constantNameHash(); // We simply calculate it on-the-fly to allow for cases where the `name` may change. if (nameHash == bytes32(0)) nameHash = keccak256(bytes(name())); /// @solidity memory-safe-assembly assembly { // Revert if the block timestamp is greater than `deadline`. if gt(timestamp(), deadline) { mstore(0x00, 0x1a15a3cc) // `PermitExpired()`. revert(0x1c, 0x04) } let m := mload(0x40) // Grab the free memory pointer. // Clean the upper 96 bits. owner := shr(96, shl(96, owner)) spender := shr(96, shl(96, spender)) // Compute the nonce slot and load its value. mstore(0x0e, _NONCES_SLOT_SEED_WITH_SIGNATURE_PREFIX) mstore(0x00, owner) let nonceSlot := keccak256(0x0c, 0x20) let nonceValue := sload(nonceSlot) // Prepare the domain separator. mstore(m, _DOMAIN_TYPEHASH) mstore(add(m, 0x20), nameHash) mstore(add(m, 0x40), _VERSION_HASH) mstore(add(m, 0x60), chainid()) mstore(add(m, 0x80), address()) mstore(0x2e, keccak256(m, 0xa0)) // Prepare the struct hash. mstore(m, _PERMIT_TYPEHASH) mstore(add(m, 0x20), owner) mstore(add(m, 0x40), spender) mstore(add(m, 0x60), value) mstore(add(m, 0x80), nonceValue) mstore(add(m, 0xa0), deadline) mstore(0x4e, keccak256(m, 0xc0)) // Prepare the ecrecover calldata. mstore(0x00, keccak256(0x2c, 0x42)) mstore(0x20, and(0xff, v)) mstore(0x40, r) mstore(0x60, s) let t := staticcall(gas(), 1, 0, 0x80, 0x20, 0x20) // If the ecrecover fails, the returndatasize will be 0x00, // `owner` will be checked if it equals the hash at 0x00, // which evaluates to false (i.e. 0), and we will revert. // If the ecrecover succeeds, the returndatasize will be 0x20, // `owner` will be compared against the returned address at 0x20. if iszero(eq(mload(returndatasize()), owner)) { mstore(0x00, 0xddafbaef) // `InvalidPermit()`. revert(0x1c, 0x04) } // Increment and store the updated nonce. sstore(nonceSlot, add(nonceValue, t)) // `t` is 1 if ecrecover succeeds. // Compute the allowance slot and store the value. // The `owner` is already at slot 0x20. mstore(0x40, or(shl(160, _ALLOWANCE_SLOT_SEED), spender)) sstore(keccak256(0x2c, 0x34), value) // Emit the {Approval} event. log3(add(m, 0x60), 0x20, _APPROVAL_EVENT_SIGNATURE, owner, spender) mstore(0x40, m) // Restore the free memory pointer. mstore(0x60, 0) // Restore the zero pointer. } } /// @dev Returns the EIP-712 domain separator for the EIP-2612 permit. function DOMAIN_SEPARATOR() public view virtual returns (bytes32 result) { bytes32 nameHash = _constantNameHash(); // We simply calculate it on-the-fly to allow for cases where the `name` may change. if (nameHash == bytes32(0)) nameHash = keccak256(bytes(name())); /// @solidity memory-safe-assembly assembly { let m := mload(0x40) // Grab the free memory pointer. mstore(m, _DOMAIN_TYPEHASH) mstore(add(m, 0x20), nameHash) mstore(add(m, 0x40), _VERSION_HASH) mstore(add(m, 0x60), chainid()) mstore(add(m, 0x80), address()) result := keccak256(m, 0xa0) } } /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* INTERNAL MINT FUNCTIONS */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev Mints `amount` tokens to `to`, increasing the total supply. /// /// Emits a {Transfer} event. function _mint(address to, uint256 amount) internal virtual { _beforeTokenTransfer(address(0), to, amount); /// @solidity memory-safe-assembly assembly { let totalSupplyBefore := sload(_TOTAL_SUPPLY_SLOT) let totalSupplyAfter := add(totalSupplyBefore, amount) // Revert if the total supply overflows. if lt(totalSupplyAfter, totalSupplyBefore) { mstore(0x00, 0xe5cfe957) // `TotalSupplyOverflow()`. revert(0x1c, 0x04) } // Store the updated total supply. sstore(_TOTAL_SUPPLY_SLOT, totalSupplyAfter) // Compute the balance slot and load its value. mstore(0x0c, _BALANCE_SLOT_SEED) mstore(0x00, to) let toBalanceSlot := keccak256(0x0c, 0x20) // Add and store the updated balance. sstore(toBalanceSlot, add(sload(toBalanceSlot), amount)) // Emit the {Transfer} event. mstore(0x20, amount) log3(0x20, 0x20, _TRANSFER_EVENT_SIGNATURE, 0, shr(96, mload(0x0c))) } _afterTokenTransfer(address(0), to, amount); } /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* INTERNAL BURN FUNCTIONS */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev Burns `amount` tokens from `from`, reducing the total supply. /// /// Emits a {Transfer} event. function _burn(address from, uint256 amount) internal virtual { _beforeTokenTransfer(from, address(0), amount); /// @solidity memory-safe-assembly assembly { // Compute the balance slot and load its value. mstore(0x0c, _BALANCE_SLOT_SEED) mstore(0x00, from) let fromBalanceSlot := keccak256(0x0c, 0x20) let fromBalance := sload(fromBalanceSlot) // Revert if insufficient balance. if gt(amount, fromBalance) { mstore(0x00, 0xf4d678b8) // `InsufficientBalance()`. revert(0x1c, 0x04) } // Subtract and store the updated balance. sstore(fromBalanceSlot, sub(fromBalance, amount)) // Subtract and store the updated total supply. sstore(_TOTAL_SUPPLY_SLOT, sub(sload(_TOTAL_SUPPLY_SLOT), amount)) // Emit the {Transfer} event. mstore(0x00, amount) log3(0x00, 0x20, _TRANSFER_EVENT_SIGNATURE, shr(96, shl(96, from)), 0) } _afterTokenTransfer(from, address(0), amount); } /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* INTERNAL TRANSFER FUNCTIONS */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev Moves `amount` of tokens from `from` to `to`. function _transfer(address from, address to, uint256 amount) internal virtual { _beforeTokenTransfer(from, to, amount); /// @solidity memory-safe-assembly assembly { let from_ := shl(96, from) // Compute the balance slot and load its value. mstore(0x0c, or(from_, _BALANCE_SLOT_SEED)) let fromBalanceSlot := keccak256(0x0c, 0x20) let fromBalance := sload(fromBalanceSlot) // Revert if insufficient balance. if gt(amount, fromBalance) { mstore(0x00, 0xf4d678b8) // `InsufficientBalance()`. revert(0x1c, 0x04) } // Subtract and store the updated balance. sstore(fromBalanceSlot, sub(fromBalance, amount)) // Compute the balance slot of `to`. mstore(0x00, to) let toBalanceSlot := keccak256(0x0c, 0x20) // Add and store the updated balance of `to`. // Will not overflow because the sum of all user balances // cannot exceed the maximum uint256 value. sstore(toBalanceSlot, add(sload(toBalanceSlot), amount)) // Emit the {Transfer} event. mstore(0x20, amount) log3(0x20, 0x20, _TRANSFER_EVENT_SIGNATURE, shr(96, from_), shr(96, mload(0x0c))) } _afterTokenTransfer(from, to, amount); } /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* INTERNAL ALLOWANCE FUNCTIONS */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev Updates the allowance of `owner` for `spender` based on spent `amount`. function _spendAllowance(address owner, address spender, uint256 amount) internal virtual { /// @solidity memory-safe-assembly assembly { // Compute the allowance slot and load its value. mstore(0x20, spender) mstore(0x0c, _ALLOWANCE_SLOT_SEED) mstore(0x00, owner) let allowanceSlot := keccak256(0x0c, 0x34) let allowance_ := sload(allowanceSlot) // If the allowance is not the maximum uint256 value. if add(allowance_, 1) { // Revert if the amount to be transferred exceeds the allowance. if gt(amount, allowance_) { mstore(0x00, 0x13be252b) // `InsufficientAllowance()`. revert(0x1c, 0x04) } // Subtract and store the updated allowance. sstore(allowanceSlot, sub(allowance_, amount)) } } } /// @dev Sets `amount` as the allowance of `spender` over the tokens of `owner`. /// /// Emits a {Approval} event. function _approve(address owner, address spender, uint256 amount) internal virtual { /// @solidity memory-safe-assembly assembly { let owner_ := shl(96, owner) // Compute the allowance slot and store the amount. mstore(0x20, spender) mstore(0x0c, or(owner_, _ALLOWANCE_SLOT_SEED)) sstore(keccak256(0x0c, 0x34), amount) // Emit the {Approval} event. mstore(0x00, amount) log3(0x00, 0x20, _APPROVAL_EVENT_SIGNATURE, shr(96, owner_), shr(96, mload(0x2c))) } } /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* HOOKS TO OVERRIDE */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev Hook that is called before any transfer of tokens. /// This includes minting and burning. function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual {} /// @dev Hook that is called after any transfer of tokens. /// This includes minting and burning. function _afterTokenTransfer(address from, address to, uint256 amount) internal virtual {} }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; /// @notice Arithmetic library with operations for fixed-point numbers. /// @author Solady (https://github.com/vectorized/solady/blob/main/src/utils/FixedPointMathLib.sol) /// @author Modified from Solmate (https://github.com/transmissions11/solmate/blob/main/src/utils/FixedPointMathLib.sol) library FixedPointMathLib { /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* CUSTOM ERRORS */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev The operation failed, as the output exceeds the maximum value of uint256. error ExpOverflow(); /// @dev The operation failed, as the output exceeds the maximum value of uint256. error FactorialOverflow(); /// @dev The operation failed, due to an overflow. error RPowOverflow(); /// @dev The mantissa is too big to fit. error MantissaOverflow(); /// @dev The operation failed, due to an multiplication overflow. error MulWadFailed(); /// @dev The operation failed, due to an multiplication overflow. error SMulWadFailed(); /// @dev The operation failed, either due to a multiplication overflow, or a division by a zero. error DivWadFailed(); /// @dev The operation failed, either due to a multiplication overflow, or a division by a zero. error SDivWadFailed(); /// @dev The operation failed, either due to a multiplication overflow, or a division by a zero. error MulDivFailed(); /// @dev The division failed, as the denominator is zero. error DivFailed(); /// @dev The full precision multiply-divide operation failed, either due /// to the result being larger than 256 bits, or a division by a zero. error FullMulDivFailed(); /// @dev The output is undefined, as the input is less-than-or-equal to zero. error LnWadUndefined(); /// @dev The input outside the acceptable domain. error OutOfDomain(); /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* CONSTANTS */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev The scalar of ETH and most ERC20s. uint256 internal constant WAD = 1e18; /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* SIMPLIFIED FIXED POINT OPERATIONS */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev Equivalent to `(x * y) / WAD` rounded down. function mulWad(uint256 x, uint256 y) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { // Equivalent to `require(y == 0 || x <= type(uint256).max / y)`. if mul(y, gt(x, div(not(0), y))) { mstore(0x00, 0xbac65e5b) // `MulWadFailed()`. revert(0x1c, 0x04) } z := div(mul(x, y), WAD) } } /// @dev Equivalent to `(x * y) / WAD` rounded down. function sMulWad(int256 x, int256 y) internal pure returns (int256 z) { /// @solidity memory-safe-assembly assembly { z := mul(x, y) // Equivalent to `require((x == 0 || z / x == y) && !(x == -1 && y == type(int256).min))`. if iszero(gt(or(iszero(x), eq(sdiv(z, x), y)), lt(not(x), eq(y, shl(255, 1))))) { mstore(0x00, 0xedcd4dd4) // `SMulWadFailed()`. revert(0x1c, 0x04) } z := sdiv(z, WAD) } } /// @dev Equivalent to `(x * y) / WAD` rounded down, but without overflow checks. function rawMulWad(uint256 x, uint256 y) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { z := div(mul(x, y), WAD) } } /// @dev Equivalent to `(x * y) / WAD` rounded down, but without overflow checks. function rawSMulWad(int256 x, int256 y) internal pure returns (int256 z) { /// @solidity memory-safe-assembly assembly { z := sdiv(mul(x, y), WAD) } } /// @dev Equivalent to `(x * y) / WAD` rounded up. function mulWadUp(uint256 x, uint256 y) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { // Equivalent to `require(y == 0 || x <= type(uint256).max / y)`. if mul(y, gt(x, div(not(0), y))) { mstore(0x00, 0xbac65e5b) // `MulWadFailed()`. revert(0x1c, 0x04) } z := add(iszero(iszero(mod(mul(x, y), WAD))), div(mul(x, y), WAD)) } } /// @dev Equivalent to `(x * y) / WAD` rounded up, but without overflow checks. function rawMulWadUp(uint256 x, uint256 y) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { z := add(iszero(iszero(mod(mul(x, y), WAD))), div(mul(x, y), WAD)) } } /// @dev Equivalent to `(x * WAD) / y` rounded down. function divWad(uint256 x, uint256 y) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { // Equivalent to `require(y != 0 && (WAD == 0 || x <= type(uint256).max / WAD))`. if iszero(mul(y, iszero(mul(WAD, gt(x, div(not(0), WAD)))))) { mstore(0x00, 0x7c5f487d) // `DivWadFailed()`. revert(0x1c, 0x04) } z := div(mul(x, WAD), y) } } /// @dev Equivalent to `(x * WAD) / y` rounded down. function sDivWad(int256 x, int256 y) internal pure returns (int256 z) { /// @solidity memory-safe-assembly assembly { z := mul(x, WAD) // Equivalent to `require(y != 0 && ((x * WAD) / WAD == x))`. if iszero(and(iszero(iszero(y)), eq(sdiv(z, WAD), x))) { mstore(0x00, 0x5c43740d) // `SDivWadFailed()`. revert(0x1c, 0x04) } z := sdiv(mul(x, WAD), y) } } /// @dev Equivalent to `(x * WAD) / y` rounded down, but without overflow and divide by zero checks. function rawDivWad(uint256 x, uint256 y) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { z := div(mul(x, WAD), y) } } /// @dev Equivalent to `(x * WAD) / y` rounded down, but without overflow and divide by zero checks. function rawSDivWad(int256 x, int256 y) internal pure returns (int256 z) { /// @solidity memory-safe-assembly assembly { z := sdiv(mul(x, WAD), y) } } /// @dev Equivalent to `(x * WAD) / y` rounded up. function divWadUp(uint256 x, uint256 y) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { // Equivalent to `require(y != 0 && (WAD == 0 || x <= type(uint256).max / WAD))`. if iszero(mul(y, iszero(mul(WAD, gt(x, div(not(0), WAD)))))) { mstore(0x00, 0x7c5f487d) // `DivWadFailed()`. revert(0x1c, 0x04) } z := add(iszero(iszero(mod(mul(x, WAD), y))), div(mul(x, WAD), y)) } } /// @dev Equivalent to `(x * WAD) / y` rounded up, but without overflow and divide by zero checks. function rawDivWadUp(uint256 x, uint256 y) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { z := add(iszero(iszero(mod(mul(x, WAD), y))), div(mul(x, WAD), y)) } } /// @dev Equivalent to `x` to the power of `y`. /// because `x ** y = (e ** ln(x)) ** y = e ** (ln(x) * y)`. function powWad(int256 x, int256 y) internal pure returns (int256) { // Using `ln(x)` means `x` must be greater than 0. return expWad((lnWad(x) * y) / int256(WAD)); } /// @dev Returns `exp(x)`, denominated in `WAD`. /// Credit to Remco Bloemen under MIT license: https://2π.com/22/exp-ln function expWad(int256 x) internal pure returns (int256 r) { unchecked { // When the result is less than 0.5 we return zero. // This happens when `x <= (log(1e-18) * 1e18) ~ -4.15e19`. if (x <= -41446531673892822313) return r; /// @solidity memory-safe-assembly assembly { // When the result is greater than `(2**255 - 1) / 1e18` we can not represent it as // an int. This happens when `x >= floor(log((2**255 - 1) / 1e18) * 1e18) ≈ 135`. if iszero(slt(x, 135305999368893231589)) { mstore(0x00, 0xa37bfec9) // `ExpOverflow()`. revert(0x1c, 0x04) } } // `x` is now in the range `(-42, 136) * 1e18`. Convert to `(-42, 136) * 2**96` // for more intermediate precision and a binary basis. This base conversion // is a multiplication by 1e18 / 2**96 = 5**18 / 2**78. x = (x << 78) / 5 ** 18; // Reduce range of x to (-½ ln 2, ½ ln 2) * 2**96 by factoring out powers // of two such that exp(x) = exp(x') * 2**k, where k is an integer. // Solving this gives k = round(x / log(2)) and x' = x - k * log(2). int256 k = ((x << 96) / 54916777467707473351141471128 + 2 ** 95) >> 96; x = x - k * 54916777467707473351141471128; // `k` is in the range `[-61, 195]`. // Evaluate using a (6, 7)-term rational approximation. // `p` is made monic, we'll multiply by a scale factor later. int256 y = x + 1346386616545796478920950773328; y = ((y * x) >> 96) + 57155421227552351082224309758442; int256 p = y + x - 94201549194550492254356042504812; p = ((p * y) >> 96) + 28719021644029726153956944680412240; p = p * x + (4385272521454847904659076985693276 << 96); // We leave `p` in `2**192` basis so we don't need to scale it back up for the division. int256 q = x - 2855989394907223263936484059900; q = ((q * x) >> 96) + 50020603652535783019961831881945; q = ((q * x) >> 96) - 533845033583426703283633433725380; q = ((q * x) >> 96) + 3604857256930695427073651918091429; q = ((q * x) >> 96) - 14423608567350463180887372962807573; q = ((q * x) >> 96) + 26449188498355588339934803723976023; /// @solidity memory-safe-assembly assembly { // Div in assembly because solidity adds a zero check despite the unchecked. // The q polynomial won't have zeros in the domain as all its roots are complex. // No scaling is necessary because p is already `2**96` too large. r := sdiv(p, q) } // r should be in the range `(0.09, 0.25) * 2**96`. // We now need to multiply r by: // - The scale factor `s ≈ 6.031367120`. // - The `2**k` factor from the range reduction. // - The `1e18 / 2**96` factor for base conversion. // We do this all at once, with an intermediate result in `2**213` // basis, so the final right shift is always by a positive amount. r = int256( (uint256(r) * 3822833074963236453042738258902158003155416615667) >> uint256(195 - k) ); } } /// @dev Returns `ln(x)`, denominated in `WAD`. /// Credit to Remco Bloemen under MIT license: https://2π.com/22/exp-ln function lnWad(int256 x) internal pure returns (int256 r) { /// @solidity memory-safe-assembly assembly { // We want to convert `x` from `10**18` fixed point to `2**96` fixed point. // We do this by multiplying by `2**96 / 10**18`. But since // `ln(x * C) = ln(x) + ln(C)`, we can simply do nothing here // and add `ln(2**96 / 10**18)` at the end. // Compute `k = log2(x) - 96`, `r = 159 - k = 255 - log2(x) = 255 ^ log2(x)`. r := shl(7, lt(0xffffffffffffffffffffffffffffffff, x)) r := or(r, shl(6, lt(0xffffffffffffffff, shr(r, x)))) r := or(r, shl(5, lt(0xffffffff, shr(r, x)))) r := or(r, shl(4, lt(0xffff, shr(r, x)))) r := or(r, shl(3, lt(0xff, shr(r, x)))) // We place the check here for more optimal stack operations. if iszero(sgt(x, 0)) { mstore(0x00, 0x1615e638) // `LnWadUndefined()`. revert(0x1c, 0x04) } // forgefmt: disable-next-item r := xor(r, byte(and(0x1f, shr(shr(r, x), 0x8421084210842108cc6318c6db6d54be)), 0xf8f9f9faf9fdfafbf9fdfcfdfafbfcfef9fafdfafcfcfbfefafafcfbffffffff)) // Reduce range of x to (1, 2) * 2**96 // ln(2^k * x) = k * ln(2) + ln(x) x := shr(159, shl(r, x)) // Evaluate using a (8, 8)-term rational approximation. // `p` is made monic, we will multiply by a scale factor later. // forgefmt: disable-next-item let p := sub( // This heavily nested expression is to avoid stack-too-deep for via-ir. sar(96, mul(add(43456485725739037958740375743393, sar(96, mul(add(24828157081833163892658089445524, sar(96, mul(add(3273285459638523848632254066296, x), x))), x))), x)), 11111509109440967052023855526967) p := sub(sar(96, mul(p, x)), 45023709667254063763336534515857) p := sub(sar(96, mul(p, x)), 14706773417378608786704636184526) p := sub(mul(p, x), shl(96, 795164235651350426258249787498)) // We leave `p` in `2**192` basis so we don't need to scale it back up for the division. // `q` is monic by convention. let q := add(5573035233440673466300451813936, x) q := add(71694874799317883764090561454958, sar(96, mul(x, q))) q := add(283447036172924575727196451306956, sar(96, mul(x, q))) q := add(401686690394027663651624208769553, sar(96, mul(x, q))) q := add(204048457590392012362485061816622, sar(96, mul(x, q))) q := add(31853899698501571402653359427138, sar(96, mul(x, q))) q := add(909429971244387300277376558375, sar(96, mul(x, q))) // `p / q` is in the range `(0, 0.125) * 2**96`. // Finalization, we need to: // - Multiply by the scale factor `s = 5.549…`. // - Add `ln(2**96 / 10**18)`. // - Add `k * ln(2)`. // - Multiply by `10**18 / 2**96 = 5**18 >> 78`. // The q polynomial is known not to have zeros in the domain. // No scaling required because p is already `2**96` too large. p := sdiv(p, q) // Multiply by the scaling factor: `s * 5**18 * 2**96`, base is now `5**18 * 2**192`. p := mul(1677202110996718588342820967067443963516166, p) // Add `ln(2) * k * 5**18 * 2**192`. // forgefmt: disable-next-item p := add(mul(16597577552685614221487285958193947469193820559219878177908093499208371, sub(159, r)), p) // Add `ln(2**96 / 10**18) * 5**18 * 2**192`. p := add(600920179829731861736702779321621459595472258049074101567377883020018308, p) // Base conversion: mul `2**18 / 2**192`. r := sar(174, p) } } /// @dev Returns `W_0(x)`, denominated in `WAD`. /// See: https://en.wikipedia.org/wiki/Lambert_W_function /// a.k.a. Product log function. This is an approximation of the principal branch. function lambertW0Wad(int256 x) internal pure returns (int256 w) { // forgefmt: disable-next-item unchecked { if ((w = x) <= -367879441171442322) revert OutOfDomain(); // `x` less than `-1/e`. int256 wad = int256(WAD); int256 p = x; uint256 c; // Whether we need to avoid catastrophic cancellation. uint256 i = 4; // Number of iterations. if (w <= 0x1ffffffffffff) { if (-0x4000000000000 <= w) { i = 1; // Inputs near zero only take one step to converge. } else if (w <= -0x3ffffffffffffff) { i = 32; // Inputs near `-1/e` take very long to converge. } } else if (w >> 63 == 0) { /// @solidity memory-safe-assembly assembly { // Inline log2 for more performance, since the range is small. let v := shr(49, w) let l := shl(3, lt(0xff, v)) l := add(or(l, byte(and(0x1f, shr(shr(l, v), 0x8421084210842108cc6318c6db6d54be)), 0x0706060506020504060203020504030106050205030304010505030400000000)), 49) w := sdiv(shl(l, 7), byte(sub(l, 31), 0x0303030303030303040506080c13)) c := gt(l, 60) i := add(2, add(gt(l, 53), c)) } } else { int256 ll = lnWad(w = lnWad(w)); /// @solidity memory-safe-assembly assembly { // `w = ln(x) - ln(ln(x)) + b * ln(ln(x)) / ln(x)`. w := add(sdiv(mul(ll, 1023715080943847266), w), sub(w, ll)) i := add(3, iszero(shr(68, x))) c := iszero(shr(143, x)) } if (c == 0) { do { // If `x` is big, use Newton's so that intermediate values won't overflow. int256 e = expWad(w); /// @solidity memory-safe-assembly assembly { let t := mul(w, div(e, wad)) w := sub(w, sdiv(sub(t, x), div(add(e, t), wad))) } if (p <= w) break; p = w; } while (--i != 0); /// @solidity memory-safe-assembly assembly { w := sub(w, sgt(w, 2)) } return w; } } do { // Otherwise, use Halley's for faster convergence. int256 e = expWad(w); /// @solidity memory-safe-assembly assembly { let t := add(w, wad) let s := sub(mul(w, e), mul(x, wad)) w := sub(w, sdiv(mul(s, wad), sub(mul(e, t), sdiv(mul(add(t, wad), s), add(t, t))))) } if (p <= w) break; p = w; } while (--i != c); /// @solidity memory-safe-assembly assembly { w := sub(w, sgt(w, 2)) } // For certain ranges of `x`, we'll use the quadratic-rate recursive formula of // R. Iacono and J.P. Boyd for the last iteration, to avoid catastrophic cancellation. if (c != 0) { int256 t = w | 1; /// @solidity memory-safe-assembly assembly { x := sdiv(mul(x, wad), t) } x = (t * (wad + lnWad(x))); /// @solidity memory-safe-assembly assembly { w := sdiv(x, add(wad, t)) } } } } /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* GENERAL NUMBER UTILITIES */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev Calculates `floor(x * y / d)` with full precision. /// Throws if result overflows a uint256 or when `d` is zero. /// Credit to Remco Bloemen under MIT license: https://2π.com/21/muldiv function fullMulDiv(uint256 x, uint256 y, uint256 d) internal pure returns (uint256 result) { /// @solidity memory-safe-assembly assembly { for {} 1 {} { // 512-bit multiply `[p1 p0] = x * y`. // Compute the product mod `2**256` and mod `2**256 - 1` // then use the Chinese Remainder Theorem to reconstruct // the 512 bit result. The result is stored in two 256 // variables such that `product = p1 * 2**256 + p0`. // Least significant 256 bits of the product. result := mul(x, y) // Temporarily use `result` as `p0` to save gas. let mm := mulmod(x, y, not(0)) // Most significant 256 bits of the product. let p1 := sub(mm, add(result, lt(mm, result))) // Handle non-overflow cases, 256 by 256 division. if iszero(p1) { if iszero(d) { mstore(0x00, 0xae47f702) // `FullMulDivFailed()`. revert(0x1c, 0x04) } result := div(result, d) break } // Make sure the result is less than `2**256`. Also prevents `d == 0`. if iszero(gt(d, p1)) { mstore(0x00, 0xae47f702) // `FullMulDivFailed()`. revert(0x1c, 0x04) } /*------------------- 512 by 256 division --------------------*/ // Make division exact by subtracting the remainder from `[p1 p0]`. // Compute remainder using mulmod. let r := mulmod(x, y, d) // `t` is the least significant bit of `d`. // Always greater or equal to 1. let t := and(d, sub(0, d)) // Divide `d` by `t`, which is a power of two. d := div(d, t) // Invert `d mod 2**256` // Now that `d` is an odd number, it has an inverse // modulo `2**256` such that `d * inv = 1 mod 2**256`. // Compute the inverse by starting with a seed that is correct // correct for four bits. That is, `d * inv = 1 mod 2**4`. let inv := xor(2, mul(3, d)) // Now use Newton-Raphson iteration to improve the precision. // Thanks to Hensel's lifting lemma, this also works in modular // arithmetic, doubling the correct bits in each step. inv := mul(inv, sub(2, mul(d, inv))) // inverse mod 2**8 inv := mul(inv, sub(2, mul(d, inv))) // inverse mod 2**16 inv := mul(inv, sub(2, mul(d, inv))) // inverse mod 2**32 inv := mul(inv, sub(2, mul(d, inv))) // inverse mod 2**64 inv := mul(inv, sub(2, mul(d, inv))) // inverse mod 2**128 result := mul( // Divide [p1 p0] by the factors of two. // Shift in bits from `p1` into `p0`. For this we need // to flip `t` such that it is `2**256 / t`. or( mul(sub(p1, gt(r, result)), add(div(sub(0, t), t), 1)), div(sub(result, r), t) ), // inverse mod 2**256 mul(inv, sub(2, mul(d, inv))) ) break } } } /// @dev Calculates `floor(x * y / d)` with full precision, rounded up. /// Throws if result overflows a uint256 or when `d` is zero. /// Credit to Uniswap-v3-core under MIT license: /// https://github.com/Uniswap/v3-core/blob/main/contracts/libraries/FullMath.sol function fullMulDivUp(uint256 x, uint256 y, uint256 d) internal pure returns (uint256 result) { result = fullMulDiv(x, y, d); /// @solidity memory-safe-assembly assembly { if mulmod(x, y, d) { result := add(result, 1) if iszero(result) { mstore(0x00, 0xae47f702) // `FullMulDivFailed()`. revert(0x1c, 0x04) } } } } /// @dev Returns `floor(x * y / d)`. /// Reverts if `x * y` overflows, or `d` is zero. function mulDiv(uint256 x, uint256 y, uint256 d) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { // Equivalent to require(d != 0 && (y == 0 || x <= type(uint256).max / y)) if iszero(mul(d, iszero(mul(y, gt(x, div(not(0), y)))))) { mstore(0x00, 0xad251c27) // `MulDivFailed()`. revert(0x1c, 0x04) } z := div(mul(x, y), d) } } /// @dev Returns `ceil(x * y / d)`. /// Reverts if `x * y` overflows, or `d` is zero. function mulDivUp(uint256 x, uint256 y, uint256 d) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { // Equivalent to require(d != 0 && (y == 0 || x <= type(uint256).max / y)) if iszero(mul(d, iszero(mul(y, gt(x, div(not(0), y)))))) { mstore(0x00, 0xad251c27) // `MulDivFailed()`. revert(0x1c, 0x04) } z := add(iszero(iszero(mod(mul(x, y), d))), div(mul(x, y), d)) } } /// @dev Returns `ceil(x / d)`. /// Reverts if `d` is zero. function divUp(uint256 x, uint256 d) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { if iszero(d) { mstore(0x00, 0x65244e4e) // `DivFailed()`. revert(0x1c, 0x04) } z := add(iszero(iszero(mod(x, d))), div(x, d)) } } /// @dev Returns `max(0, x - y)`. function zeroFloorSub(uint256 x, uint256 y) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { z := mul(gt(x, y), sub(x, y)) } } /// @dev Exponentiate `x` to `y` by squaring, denominated in base `b`. /// Reverts if the computation overflows. function rpow(uint256 x, uint256 y, uint256 b) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { z := mul(b, iszero(y)) // `0 ** 0 = 1`. Otherwise, `0 ** n = 0`. if x { z := xor(b, mul(xor(b, x), and(y, 1))) // `z = isEven(y) ? scale : x` let half := shr(1, b) // Divide `b` by 2. // Divide `y` by 2 every iteration. for { y := shr(1, y) } y { y := shr(1, y) } { let xx := mul(x, x) // Store x squared. let xxRound := add(xx, half) // Round to the nearest number. // Revert if `xx + half` overflowed, or if `x ** 2` overflows. if or(lt(xxRound, xx), shr(128, x)) { mstore(0x00, 0x49f7642b) // `RPowOverflow()`. revert(0x1c, 0x04) } x := div(xxRound, b) // Set `x` to scaled `xxRound`. // If `y` is odd: if and(y, 1) { let zx := mul(z, x) // Compute `z * x`. let zxRound := add(zx, half) // Round to the nearest number. // If `z * x` overflowed or `zx + half` overflowed: if or(xor(div(zx, x), z), lt(zxRound, zx)) { // Revert if `x` is non-zero. if iszero(iszero(x)) { mstore(0x00, 0x49f7642b) // `RPowOverflow()`. revert(0x1c, 0x04) } } z := div(zxRound, b) // Return properly scaled `zxRound`. } } } } } /// @dev Returns the square root of `x`. function sqrt(uint256 x) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { // `floor(sqrt(2**15)) = 181`. `sqrt(2**15) - 181 = 2.84`. z := 181 // The "correct" value is 1, but this saves a multiplication later. // This segment is to get a reasonable initial estimate for the Babylonian method. With a bad // start, the correct # of bits increases ~linearly each iteration instead of ~quadratically. // Let `y = x / 2**r`. We check `y >= 2**(k + 8)` // but shift right by `k` bits to ensure that if `x >= 256`, then `y >= 256`. let r := shl(7, lt(0xffffffffffffffffffffffffffffffffff, x)) r := or(r, shl(6, lt(0xffffffffffffffffff, shr(r, x)))) r := or(r, shl(5, lt(0xffffffffff, shr(r, x)))) r := or(r, shl(4, lt(0xffffff, shr(r, x)))) z := shl(shr(1, r), z) // Goal was to get `z*z*y` within a small factor of `x`. More iterations could // get y in a tighter range. Currently, we will have y in `[256, 256*(2**16))`. // We ensured `y >= 256` so that the relative difference between `y` and `y+1` is small. // That's not possible if `x < 256` but we can just verify those cases exhaustively. // Now, `z*z*y <= x < z*z*(y+1)`, and `y <= 2**(16+8)`, and either `y >= 256`, or `x < 256`. // Correctness can be checked exhaustively for `x < 256`, so we assume `y >= 256`. // Then `z*sqrt(y)` is within `sqrt(257)/sqrt(256)` of `sqrt(x)`, or about 20bps. // For `s` in the range `[1/256, 256]`, the estimate `f(s) = (181/1024) * (s+1)` // is in the range `(1/2.84 * sqrt(s), 2.84 * sqrt(s))`, // with largest error when `s = 1` and when `s = 256` or `1/256`. // Since `y` is in `[256, 256*(2**16))`, let `a = y/65536`, so that `a` is in `[1/256, 256)`. // Then we can estimate `sqrt(y)` using // `sqrt(65536) * 181/1024 * (a + 1) = 181/4 * (y + 65536)/65536 = 181 * (y + 65536)/2**18`. // There is no overflow risk here since `y < 2**136` after the first branch above. z := shr(18, mul(z, add(shr(r, x), 65536))) // A `mul()` is saved from starting `z` at 181. // Given the worst case multiplicative error of 2.84 above, 7 iterations should be enough. z := shr(1, add(z, div(x, z))) z := shr(1, add(z, div(x, z))) z := shr(1, add(z, div(x, z))) z := shr(1, add(z, div(x, z))) z := shr(1, add(z, div(x, z))) z := shr(1, add(z, div(x, z))) z := shr(1, add(z, div(x, z))) // If `x+1` is a perfect square, the Babylonian method cycles between // `floor(sqrt(x))` and `ceil(sqrt(x))`. This statement ensures we return floor. // See: https://en.wikipedia.org/wiki/Integer_square_root#Using_only_integer_division z := sub(z, lt(div(x, z), z)) } } /// @dev Returns the cube root of `x`. /// Credit to bout3fiddy and pcaversaccio under AGPLv3 license: /// https://github.com/pcaversaccio/snekmate/blob/main/src/utils/Math.vy function cbrt(uint256 x) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { let r := shl(7, lt(0xffffffffffffffffffffffffffffffff, x)) r := or(r, shl(6, lt(0xffffffffffffffff, shr(r, x)))) r := or(r, shl(5, lt(0xffffffff, shr(r, x)))) r := or(r, shl(4, lt(0xffff, shr(r, x)))) r := or(r, shl(3, lt(0xff, shr(r, x)))) z := div(shl(div(r, 3), shl(lt(0xf, shr(r, x)), 0xf)), xor(7, mod(r, 3))) z := div(add(add(div(x, mul(z, z)), z), z), 3) z := div(add(add(div(x, mul(z, z)), z), z), 3) z := div(add(add(div(x, mul(z, z)), z), z), 3) z := div(add(add(div(x, mul(z, z)), z), z), 3) z := div(add(add(div(x, mul(z, z)), z), z), 3) z := div(add(add(div(x, mul(z, z)), z), z), 3) z := div(add(add(div(x, mul(z, z)), z), z), 3) z := sub(z, lt(div(x, mul(z, z)), z)) } } /// @dev Returns the square root of `x`, denominated in `WAD`. function sqrtWad(uint256 x) internal pure returns (uint256 z) { unchecked { z = 10 ** 9; if (x <= type(uint256).max / 10 ** 36 - 1) { x *= 10 ** 18; z = 1; } z *= sqrt(x); } } /// @dev Returns the cube root of `x`, denominated in `WAD`. function cbrtWad(uint256 x) internal pure returns (uint256 z) { unchecked { z = 10 ** 12; if (x <= (type(uint256).max / 10 ** 36) * 10 ** 18 - 1) { if (x >= type(uint256).max / 10 ** 36) { x *= 10 ** 18; z = 10 ** 6; } else { x *= 10 ** 36; z = 1; } } z *= cbrt(x); } } /// @dev Returns the factorial of `x`. function factorial(uint256 x) internal pure returns (uint256 result) { /// @solidity memory-safe-assembly assembly { if iszero(lt(x, 58)) { mstore(0x00, 0xaba0f2a2) // `FactorialOverflow()`. revert(0x1c, 0x04) } for { result := 1 } x { x := sub(x, 1) } { result := mul(result, x) } } } /// @dev Returns the log2 of `x`. /// Equivalent to computing the index of the most significant bit (MSB) of `x`. /// Returns 0 if `x` is zero. function log2(uint256 x) internal pure returns (uint256 r) { /// @solidity memory-safe-assembly assembly { r := shl(7, lt(0xffffffffffffffffffffffffffffffff, x)) r := or(r, shl(6, lt(0xffffffffffffffff, shr(r, x)))) r := or(r, shl(5, lt(0xffffffff, shr(r, x)))) r := or(r, shl(4, lt(0xffff, shr(r, x)))) r := or(r, shl(3, lt(0xff, shr(r, x)))) // forgefmt: disable-next-item r := or(r, byte(and(0x1f, shr(shr(r, x), 0x8421084210842108cc6318c6db6d54be)), 0x0706060506020504060203020504030106050205030304010505030400000000)) } } /// @dev Returns the log2 of `x`, rounded up. /// Returns 0 if `x` is zero. function log2Up(uint256 x) internal pure returns (uint256 r) { r = log2(x); /// @solidity memory-safe-assembly assembly { r := add(r, lt(shl(r, 1), x)) } } /// @dev Returns the log10 of `x`. /// Returns 0 if `x` is zero. function log10(uint256 x) internal pure returns (uint256 r) { /// @solidity memory-safe-assembly assembly { if iszero(lt(x, 100000000000000000000000000000000000000)) { x := div(x, 100000000000000000000000000000000000000) r := 38 } if iszero(lt(x, 100000000000000000000)) { x := div(x, 100000000000000000000) r := add(r, 20) } if iszero(lt(x, 10000000000)) { x := div(x, 10000000000) r := add(r, 10) } if iszero(lt(x, 100000)) { x := div(x, 100000) r := add(r, 5) } r := add(r, add(gt(x, 9), add(gt(x, 99), add(gt(x, 999), gt(x, 9999))))) } } /// @dev Returns the log10 of `x`, rounded up. /// Returns 0 if `x` is zero. function log10Up(uint256 x) internal pure returns (uint256 r) { r = log10(x); /// @solidity memory-safe-assembly assembly { r := add(r, lt(exp(10, r), x)) } } /// @dev Returns the log256 of `x`. /// Returns 0 if `x` is zero. function log256(uint256 x) internal pure returns (uint256 r) { /// @solidity memory-safe-assembly assembly { r := shl(7, lt(0xffffffffffffffffffffffffffffffff, x)) r := or(r, shl(6, lt(0xffffffffffffffff, shr(r, x)))) r := or(r, shl(5, lt(0xffffffff, shr(r, x)))) r := or(r, shl(4, lt(0xffff, shr(r, x)))) r := or(shr(3, r), lt(0xff, shr(r, x))) } } /// @dev Returns the log256 of `x`, rounded up. /// Returns 0 if `x` is zero. function log256Up(uint256 x) internal pure returns (uint256 r) { r = log256(x); /// @solidity memory-safe-assembly assembly { r := add(r, lt(shl(shl(3, r), 1), x)) } } /// @dev Returns the scientific notation format `mantissa * 10 ** exponent` of `x`. /// Useful for compressing prices (e.g. using 25 bit mantissa and 7 bit exponent). function sci(uint256 x) internal pure returns (uint256 mantissa, uint256 exponent) { /// @solidity memory-safe-assembly assembly { mantissa := x if mantissa { if iszero(mod(mantissa, 1000000000000000000000000000000000)) { mantissa := div(mantissa, 1000000000000000000000000000000000) exponent := 33 } if iszero(mod(mantissa, 10000000000000000000)) { mantissa := div(mantissa, 10000000000000000000) exponent := add(exponent, 19) } if iszero(mod(mantissa, 1000000000000)) { mantissa := div(mantissa, 1000000000000) exponent := add(exponent, 12) } if iszero(mod(mantissa, 1000000)) { mantissa := div(mantissa, 1000000) exponent := add(exponent, 6) } if iszero(mod(mantissa, 10000)) { mantissa := div(mantissa, 10000) exponent := add(exponent, 4) } if iszero(mod(mantissa, 100)) { mantissa := div(mantissa, 100) exponent := add(exponent, 2) } if iszero(mod(mantissa, 10)) { mantissa := div(mantissa, 10) exponent := add(exponent, 1) } } } } /// @dev Convenience function for packing `x` into a smaller number using `sci`. /// The `mantissa` will be in bits [7..255] (the upper 249 bits). /// The `exponent` will be in bits [0..6] (the lower 7 bits). /// Use `SafeCastLib` to safely ensure that the `packed` number is small /// enough to fit in the desired unsigned integer type: /// ``` /// uint32 packed = SafeCastLib.toUint32(FixedPointMathLib.packSci(777 ether)); /// ``` function packSci(uint256 x) internal pure returns (uint256 packed) { (x, packed) = sci(x); // Reuse for `mantissa` and `exponent`. /// @solidity memory-safe-assembly assembly { if shr(249, x) { mstore(0x00, 0xce30380c) // `MantissaOverflow()`. revert(0x1c, 0x04) } packed := or(shl(7, x), packed) } } /// @dev Convenience function for unpacking a packed number from `packSci`. function unpackSci(uint256 packed) internal pure returns (uint256 unpacked) { unchecked { unpacked = (packed >> 7) * 10 ** (packed & 0x7f); } } /// @dev Returns the average of `x` and `y`. function avg(uint256 x, uint256 y) internal pure returns (uint256 z) { unchecked { z = (x & y) + ((x ^ y) >> 1); } } /// @dev Returns the average of `x` and `y`. function avg(int256 x, int256 y) internal pure returns (int256 z) { unchecked { z = (x >> 1) + (y >> 1) + (x & y & 1); } } /// @dev Returns the absolute value of `x`. function abs(int256 x) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { z := xor(sub(0, shr(255, x)), add(sub(0, shr(255, x)), x)) } } /// @dev Returns the absolute distance between `x` and `y`. function dist(int256 x, int256 y) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { z := xor(mul(xor(sub(y, x), sub(x, y)), sgt(x, y)), sub(y, x)) } } /// @dev Returns the minimum of `x` and `y`. function min(uint256 x, uint256 y) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { z := xor(x, mul(xor(x, y), lt(y, x))) } } /// @dev Returns the minimum of `x` and `y`. function min(int256 x, int256 y) internal pure returns (int256 z) { /// @solidity memory-safe-assembly assembly { z := xor(x, mul(xor(x, y), slt(y, x))) } } /// @dev Returns the maximum of `x` and `y`. function max(uint256 x, uint256 y) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { z := xor(x, mul(xor(x, y), gt(y, x))) } } /// @dev Returns the maximum of `x` and `y`. function max(int256 x, int256 y) internal pure returns (int256 z) { /// @solidity memory-safe-assembly assembly { z := xor(x, mul(xor(x, y), sgt(y, x))) } } /// @dev Returns `x`, bounded to `minValue` and `maxValue`. function clamp(uint256 x, uint256 minValue, uint256 maxValue) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { z := xor(x, mul(xor(x, minValue), gt(minValue, x))) z := xor(z, mul(xor(z, maxValue), lt(maxValue, z))) } } /// @dev Returns `x`, bounded to `minValue` and `maxValue`. function clamp(int256 x, int256 minValue, int256 maxValue) internal pure returns (int256 z) { /// @solidity memory-safe-assembly assembly { z := xor(x, mul(xor(x, minValue), sgt(minValue, x))) z := xor(z, mul(xor(z, maxValue), slt(maxValue, z))) } } /// @dev Returns greatest common divisor of `x` and `y`. function gcd(uint256 x, uint256 y) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { for { z := x } y {} { let t := y y := mod(z, y) z := t } } } /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* RAW NUMBER OPERATIONS */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev Returns `x + y`, without checking for overflow. function rawAdd(uint256 x, uint256 y) internal pure returns (uint256 z) { unchecked { z = x + y; } } /// @dev Returns `x + y`, without checking for overflow. function rawAdd(int256 x, int256 y) internal pure returns (int256 z) { unchecked { z = x + y; } } /// @dev Returns `x - y`, without checking for underflow. function rawSub(uint256 x, uint256 y) internal pure returns (uint256 z) { unchecked { z = x - y; } } /// @dev Returns `x - y`, without checking for underflow. function rawSub(int256 x, int256 y) internal pure returns (int256 z) { unchecked { z = x - y; } } /// @dev Returns `x * y`, without checking for overflow. function rawMul(uint256 x, uint256 y) internal pure returns (uint256 z) { unchecked { z = x * y; } } /// @dev Returns `x * y`, without checking for overflow. function rawMul(int256 x, int256 y) internal pure returns (int256 z) { unchecked { z = x * y; } } /// @dev Returns `x / y`, returning 0 if `y` is zero. function rawDiv(uint256 x, uint256 y) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { z := div(x, y) } } /// @dev Returns `x / y`, returning 0 if `y` is zero. function rawSDiv(int256 x, int256 y) internal pure returns (int256 z) { /// @solidity memory-safe-assembly assembly { z := sdiv(x, y) } } /// @dev Returns `x % y`, returning 0 if `y` is zero. function rawMod(uint256 x, uint256 y) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { z := mod(x, y) } } /// @dev Returns `x % y`, returning 0 if `y` is zero. function rawSMod(int256 x, int256 y) internal pure returns (int256 z) { /// @solidity memory-safe-assembly assembly { z := smod(x, y) } } /// @dev Returns `(x + y) % d`, return 0 if `d` if zero. function rawAddMod(uint256 x, uint256 y, uint256 d) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { z := addmod(x, y, d) } } /// @dev Returns `(x * y) % d`, return 0 if `d` if zero. function rawMulMod(uint256 x, uint256 y, uint256 d) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { z := mulmod(x, y, d) } } }
{ "evmVersion": "paris", "libraries": {}, "metadata": { "bytecodeHash": "ipfs", "useLiteralContent": true }, "optimizer": { "enabled": true, "runs": 50 }, "remappings": [], "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } } }
Contract Security Audit
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Contract ABI
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Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
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
-----Decoded View---------------
Arg [0] : protocolGovernor_ (address): 0x5bbc51EdA8508F598E01eeCd1EA129E741bCc25a
Arg [1] : pointsOperator_ (address): 0x02F6EEb4E33bbA64bcBEA18bd149B9031C2735F7
Arg [2] : isAutoCompounding_ (bool): True
Arg [3] : params (tuple): System.Collections.Generic.List`1[Nethereum.ABI.FunctionEncoding.ParameterOutput]
-----Encoded View---------------
18 Constructor Arguments found :
Arg [0] : 0000000000000000000000005bbc51eda8508f598e01eecd1ea129e741bcc25a
Arg [1] : 00000000000000000000000002f6eeb4e33bba64bcbea18bd149b9031c2735f7
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000001
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000080
Arg [4] : 0000000000000000000000008e0aed420fe97cc3ada9cb2bbb77f34a0c444b68
Arg [5] : 0000000000000000000000001801de9f9f58a9e2414e6414672d33eac4a6f3b0
Arg [6] : 0000000000000000000000004300000000000000000000000000000000000003
Arg [7] : 00000000000000000000000000000000000000000000000029a2241af62c0000
Arg [8] : 00000000000000000000000000000000000000000000000010a741a462780000
Arg [9] : 0000000000000000000000000000000000000000000000000ff59ee833b30000
Arg [10] : 0000000000000000000000000000000000000000000000000000000000000120
Arg [11] : 0000000000000000000000000000000000000000000000000000000000000180
Arg [12] : 0000000000000000000000000000000000000000000000000000000000000012
Arg [13] : 0000000000000000000000000000000000000000000000000000000000000023
Arg [14] : 4a756963652046696e616e6365205553444220436f6c6c61746572616c205661
Arg [15] : 756c740000000000000000000000000000000000000000000000000000000000
Arg [16] : 0000000000000000000000000000000000000000000000000000000000000007
Arg [17] : 6a63765553444200000000000000000000000000000000000000000000000000
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.